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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Drilling into plastic feels simple — until you press the trigger and the bit skates across the surface or cracks the workpiece clean in half. The real trick is that standard metal-wood bits have a tip that walks before it cuts, and a geometry that grabs rather than shears through plastic. You need a tip that stays planted on entry and cutting edges that shave the plastic without grabbing — and the right drill bits for plastic deliver exactly that.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
We break down five sets that handle the tricky balance of sharpness and chip evacuation, each bringing a different angle to getting through acrylic, PVC, polycarbonate, and nylon without the cracks. These are the drill bits for plastic that actually respect the material.
Quick Picks
- Titanium Brad Point Drill Bit Set 12Pcs (1/8″ – 1/2″) — Quick-Change Master
- BOSCH BL21A 21-Piece Assorted Set Black Oxide Metal Drill Bits — Best Overall
- DEWALT DW1361 21 Pc. Titanium Nitride Coated Pilot Point Drill Bit Set — Cleanest Starts
- DEWALT DWA1184 14-Piece 135 Degree Split Point Drill Bit Set — Anti-Walk Specialist
- DelitonGude 11/64” Brad Point Drill Bit Set, 10 Pcs — Bulk Brad Point
How To Choose The Best Drill Bits for Plastic
Plastic is forgiving until you push too hard or use the wrong entry geometry. The difference between a clean hole and a cracked mess lives in three places: the tip design, the flute shape, and the material of the bit itself.
Tip Geometry: The Real Anti-Walk Feature
The tip is where a drill bit either earns its keep or destroys your workpiece. A standard twist bit has a sharp point that skates sideways across glossy plastic, leaving a scratch before it ever bites in. A brad point tip has a small spur at the center that bites first and holds the bit in place — that is the best feature for plastic. A split point (like a 135-degree split point) achieves the same anti-walk effect by grinding the tip into a self-centering chisel edge. Either way, if the tip walks, you will crack the plastic.
Flute Design and Chip Removal
Plastic melts rather than pulverizes, and melted plastic clogs standard flutes fast. A wide or extra-wide flute channel clears the plastic shavings out of the hole before heat builds up and re-welds them to the bit. Double cutting edges (two flutes) are the standard, but the actual width of the flute groove matters more than the count. A bit that packs chips will overheat and gum up in acrylic or polycarbonate.
Coating and Material
Coatings like black oxide or titanium nitride reduce friction and help the bit slide through plastic rather than grind against it. High-speed steel (HSS) holds an edge well for the moderate heat plastic drilling creates. High-carbon steel is tougher, but if you only drill plastic, the main advantage is simply having a sharp bit with the right geometry. The main point is that a slick coating prevents the bit from grabbing on exit — grabbing is what cracks the back edge of the hole.
Quick Comparison
| Model | Best For | Tip Style | Pieces | Shank Type | Amazon |
|---|---|---|---|---|---|
| Titanium Brad Point 12Pcs | Quick-change precision | Brad Point | 12 | Hex | Amazon |
| BOSCH BL21A | Versatile pro-grade set | Split Point | 21 | 3-Flats (≥3/16 in) | Amazon |
| DEWALT DW1361 | Contact-start cleanliness | Pilot Point | 21 | Round | Amazon |
| DEWALT DWA1184 | Stopping tip wander | 135° Split Point | 14 | 3-Flats (≥3/16 in) | Amazon |
| DelitonGude 11/64” | Single-size bulk precision | Brad Point | 10 | Straight | Amazon |
In‑Depth Reviews
1. Titanium Brad Point Drill Bit Set 12Pcs (1/8″ – 1/2″)
The hex-shank specialist that hops between drills without re-chucking.
If you switch between a drill and an impact driver throughout a project, this set saves you the fiddle of re-tightening a chuck every time. The 1/4-inch hex shank locks straight into any quick-change chuck (as the maker notes, it is designed for secure locking into a quick-change chuck), so you pop bits in and out in under a second. That convenience does not sacrifice precision — the brad point tip bites and holds on glossy acrylic and polycarbonate so the hole starts exactly where you aim.
The 12-piece set covers the common imperial sizes from 1/8-inch (with two spares) up to 1/2-inch. Double cutting edges and wide flutes push chips out fast, which buyers report prevents the gum-up that ruins holes in softer plastics. The high-speed steel construction handles moderate heat well, and the titanium coating reduces friction so the bit slides through rather than grabs on exit. Unlike the BOSCH BL21A set, which also handles metal, this one is laser-focused on wood and plastics — it works on hardwood, plywood, PVC, MDF, acrylic, nylon, and rubber, according to the product data.
The trade-off? The hex shank limits you to drills and impact drivers with a 1/4-inch hex collet. A standard three-jaw chuck will still grip it, but the reason to buy this set is the speed of the quick-change system. If you work on one drill all day and never swap bits, a round-shank set like the DEWALT DW1361 might suit you better.
Why This Bites
- 1/4-inch hex shank for instant bit swaps in quick-change chucks
- Brad point tip stops walk on glossy plastic surfaces
- Titanium coating reduces friction and prevents grab on exit
The Catch
- Hex shank limits convenience to drills with 1/4-inch hex collets
- Only 12 pieces — no ultra-small sizes below 1/8-inch
Grab it for: anyone who swaps bits often across a drill and impact driver — the hex shank is a genuine time-saver.
A realistic limit: the 1/4-inch hex shank means this set does not fit standard keyless chucks as snugly as a straight or 3-flat shank, so occasional slipping is possible if the chuck cannot lock the hex profile firmly.
2. BOSCH BL21A 21-Piece Assorted Set Black Oxide Metal Drill Bits
The 21-piece workhorse that spans plastic, wood, and light-gauge metal in one case.
This is the set to reach for when you need one kit to cover everything from acrylic sheets to aluminum angle — but it handles plastic with pro-level finesse. The split-point tip (which Bosch calls a split-point tip engineered for no-skate, clean and accurate starts) means the bit does not wander that first split-second it touches the drill surface, which is exactly what prevents the hairline crack that starts from a slipped entry. The black oxide coating reduces friction and keeps the bit sliding through polycarbonate and PVC without the grabbing that chips the exit edge.
With 21 pieces ranging from two each of 1/16-inch up to a single 1/2-inch bit, you have duplicates of the most-used sizes (three of them under 3/16-inch) so a dull 5/64-inch does not stop a project mid-afternoon. Bits 3/16-inch and larger have a three-flat shank that grips the chuck tighter and resists spin-out — a detail Bosch specifically designed for contractors and electricians who need reliability through repetitive use. At 21 pieces versus the DelitonGude set’s 10 pieces, this set offers a much broader range of bits in one case.
The heavy-duty black oxide coating is the headline here: Bosch says it generates less friction and provides longer life than standard drill bits. That matters for plastic because less friction means less heat — and heat is what softens the material and causes a drill bit to grab. The one upfront reality is that at 21 pieces, you get sizes you might never need if you only ever drill 1/8-inch holes, but the breadth is exactly what makes this a one-and-done buy for a mixed-material workshop.
Why It Wins
- Split-point tip stops walking instantly on glossy plastic
- Black oxide coating cuts friction to prevent heat buildup in soft materials
- 21 pieces with duplicates of small sizes — practical for frequent use
Think Twice If
- At 21 pieces, many sizes may sit unused if you drill only one hole size
- Not a brad point — the split point works but purists may want a center spur
Best for: the home shop that drills plastic, wood, and light metal — the split-point tip plus black oxide coating gives you a crack-free start every time without needing a separate set for each material.
The reason to pause: if you only ever drill plastic and want a dedicated brad point, this Bosch set is a generalist that excels but does not have the center spur of a dedicated brad point bit.
3. DEWALT DW1361 21 Pc. Titanium Nitride Coated Pilot Point Drill Bit Set
The pilot-point set that starts a hole the instant it touches the material.
DEWALT calls its Pilot Point design a bit that starts on contact for cleaner holes — and that is not marketing fluff. A standard twist bit has a chisel edge that needs to be forced through the surface, which in plastic is exactly the motion that sends a crack running. The Pilot Point grinds the tip into a sharp, self-centering shape that slices into the material immediately, so you do not need to press down hard. Less downward force equals less stress on the plastic and fewer exit-edge chips.
The titanium nitride coating is harder than bare HSS and stays slick, which helps the bit glide through acrylic and polycarbonate rather than scraping and melting its way through. The 21-piece range covers 1/16-inch to 1/2-inch, with two sets of the smallest four sizes. The tapered web — a thicker core near the shank — reduces breaking, according to DEWALT, which matters when you are drilling in thin-walled PVC where a sudden grab could snap the bit. And unlike the BOSCH BL21A, which uses a black oxide coating, the titanium nitride on this set is a noticeably harder surface that maintains its slickness through more holes before dulling.
The catch is that the Pilot Point geometry is DEWALT-specific, meaning replacement single bits from other brands will not match the same entry behavior — you are committing to staying inside the DEWALT ecosystem for refills. Also, the round shank on all sizes means larger bits can spin in a standard three-jaw chuck if you do not tighten firmly, unlike the 3-flat shank on the DW1361’s competitor in the same brand.
What Stands Out
- Pilot Point tip starts cutting on contact — no walking on slick plastic
- Titanium nitride coating stays hard and slick through many holes
- Tapered web design resists snapping in thin or brittle materials
The Limitation
- Pilot Point is DEWALT-specific — replacements must be the same brand
- Round shank on all bits can slip in a chuck if not cranked down
Reach for it if: you want the cleanest possible hole entry without pre-punching a divot — the Pilot Point is genuinely faster at starting than a standard tip.
skip it if: you want to buy replacement bits from any brand later — the Pilot Point geometry is unique to DEWALT and off-brand refills will not cut the same way.
4. DEWALT DWA1184 14-Piece 135 Degree Split Point Drill Bit Set
The 135-degree split point that stops tip wander before it starts a crack.
If your main frustration is a bit that skates across glossy plastic before biting, the split point on this DEWALT set is the direct fix. A 135-degree split point (the product data specifies a 135 degree split point tip design to help reduce walking) does not have a flat chisel edge like a standard 118-degree twist bit — instead it has a sharp, self-centering chisel that bites into the material instantly, so you do not have to fight the bit to keep it on your mark. That matters on polycarbonate and acrylic where a stray scratch is permanent.
The high-speed steel construction works well for plastic, wood, and metal (the data lists all three). The black-and-gold coating (described as a gold finish in the specs) helps prevent rust and wear, and the tapered web design gives the bit extra durability to resist breakage when drilling through tougher plastics like nylon or fiber-reinforced panels. The 3-flats shank on sizes larger than 3/16-inch reduces spin-out in the chuck — a common frustration when drilling through thick material. Owners mention that the gold coating also seems to reduce friction slightly on softer plastics compared with uncoated HSS bits, keeping chips flowing out rather than melting into the flutes.
At 14 pieces, this set is deliberately lean — you get the sizes you actually use without the bits that sit in the case forever. The downside compared with the 21-piece Bosch BL21A is that you miss the duplicate small sizes (1/16-inch and 5/64-inch) that wear fastest. If you drill a lot of very small holes in quick succession, the single 1/16-inch bit here will dull faster than the duplicate-packed sets.
Why It Works
- 135-degree split point bites immediately — no skating on glossy surfaces
- 3-flat shank on bits ≥3/16-inch prevents spinning in the chuck
- Tapered web resists breakage in tougher plastics like nylon
What It Lacks
- 14 pieces with no duplicates — small sizes wear faster with no backup
- Gold coating helps with rust but not as slick as titanium nitride on plastic
Choose it for: a compact, focused set that solves tip-wander without excess bits — the 135-degree split point is the best anti-walk feature at this price tier.
Hold off if: you regularly drill very small holes (1/16-inch) in production runs — the single bit will dull and you will need to re-order faster than with a set that gives you duplicates.
5. DelitonGude 11/64” Brad Point Drill Bit Set, 10 Pcs
Ten identical brad-point bits so you never halt a project for a dull tip.
Most drill bit sets give you one of each size, which means the moment a 11/64-inch bit dulls, you stop drilling until you find a replacement or buy a whole new set. This DelitonGude set flips that logic: you get ten identical 11/64-inch brad-point bits in one box, so you have spares on hand before the first one wears out. The product data explains this directly: One box contains 10 pieces of the same brad point drill bit with commonly used sizes, which avoids the need to purchase infrequently used sizes and prevents waste.
The bits are made from quenched high-carbon steel (the data states quenched high carbon steel, high hardness, long service life) with a black oxide finish. The brad point tip provides precision accuracy for starting your drilling hole — that center spur bites into plastic and holds the bit exactly on your mark, which is vital on smooth acrylic and polycarbonate where a standard twist bit would skate. The double cutting edges and extra-wide flutes, which the manufacturer says ensure fast drilling and efficient chip removal, push shavings out so they do not melt and re-weld inside the hole. Compared with the DEWALT DWA1184 which offers variety, this set gives you depth — ten shots at the same size before you need to restock.
The catch is obvious: if 11/64-inch is not a size you use often, ten of them is excess. The set is built for a specific task (drilling 11/64-inch holes repeatedly) and not for variety. The wood surface recommendation also means these are designed for wood and engineered woods first, though the brad point works fine on plastics like PVC, MDF, and acrylic. If you need multiple sizes, the BOSCH BL21A or DEWALT DW1361 give you far more range in one case.
The Smart Idea
- Ten identical bits — practical for high-volume 11/64-inch drilling jobs
- Brad point tip holds position on glossy plastic without pre-punching
- Extra-wide flutes clear chips fast, preventing heat buildup in plastic
The Hard Limit
- Only 11/64-inch — no other sizes; you buy this set for one diameter
- High-carbon steel rather than HSS means less edge retention in abrasive composites
Ideal for: a specific production or repair task needing dozens of 11/64-inch holes in plastic or wood — you will not stop to sharpen or re-order for a long time.
Not for: anyone who needs a range of hole sizes — this is a single-diameter bulk purchase, not a general-purpose set.
Understanding the Specs
Brad Point vs Split Point vs Pilot Point
These three tip shapes solve the same problem — a wandering bit — but work differently. A brad point has a thin center spur that bites first and holds the bit on your mark, like a tiny anchor. A split point has the tip ground into a sharp chisel edge that self-centers without a spur. A Pilot Point is DEWALT’s proprietary version of a split point that sharpens the tip so it starts cutting on contact. For plastic, a brad point gives you the most control because the spur digs in before the cutting edges touch the material.
High-Speed Steel (HSS) vs High-Carbon Steel
High-speed steel keeps its cutting edge at higher temperatures — important when drilling through multiple holes of acrylic or polycarbonate, where friction generates heat that can soften a bit. High-carbon steel is tougher, but it can soften faster than HSS if you push the drill too hard into plastic. For occasional home use, HSS is the standard pick; high-carbon steel can still work well when the bit geometry suits plastic and drilling heat is kept under control.
Shank Types: Straight, 3-Flat, and Hex
The shank is the part of the bit that goes into the drill chuck. A straight round shank is universal — it fits any standard three-jaw chuck but can spin out when you push hard. A 3-flat shank has three flat surfaces machined into the round shank so the chuck jaws dig in and prevent spinning; Bosch and DEWALT use this on bits 3/16-inch and larger. A hex shank (like the Titanium Brad Point set) locks into a 1/4-inch quick-change chuck instantly but does not grip as securely in a standard three-jaw chuck.
Coating: Black Oxide vs Titanium Nitride
Black oxide is a chemical coating that reduces friction and resists rust — Bosch uses it on the BL21A to give longer life than standard uncoated bits. Titanium nitride (TiN) is a ceramic coating that is harder and slicker than black oxide, which DEWALT uses on the DW1361 for cleaner starts. For drilling plastic, the coating’s main job is to reduce the friction that causes heat and melting. TiN is the more durable option for repeated use, but black oxide performs well at a lower price point.
FAQ
Can I use a standard wood drill bit on plastic?
What size drill bit should I use for plastic?
How do I stop the drill bit from cracking the plastic?
Do I need a special drill speed for drilling plastic?
What is the best coolant or lubricant for drilling plastic?
Can I use a step drill bit for plastic?
Will a brad point bit work on hard plastic like polycarbonate?
How do I sharpen a drill bit used for plastic?
Final Thoughts: The Verdict
Across the board, the drill bits for plastic winner is the BOSCH BL21A because its split-point tip and black oxide coating handle plastic, wood, and light metal without walking or cracking, all in one case. If you want quick-change convenience and a dedicated brad point for glossy surfaces, grab the Titanium Brad Point 12Pcs. And for the cleanest contact-start entry on acrylic or polycarbonate, the DEWALT DW1361 Pilot Point set starts cutting the instant it touches the material.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Gardening Beyond earns from qualifying purchases. This does not affect which products we feature.