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Drilling into porcelain tile, concrete, or cast iron demands a bit that resists dulling under extreme abrasion. Standard HSS bits glaze over after a few holes, while a properly selected carbide-tipped or solid carbide bit maintains its edge through dozens of penetrations in hard masonry and metal.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. I’ve spent years comparing carbide grade, tip geometry, and shank design across hundreds of drill bit sets, studying how YG6 and YG6X tungsten carbide formulations actually perform under sustained use in tile, brick, and steel.
After analyzing owner data and real-world drilling outcomes, the best carbide drill bits combine a split-point tip for instant bite, a hex shank for zero slip, and a material grade that won’t fracture on impact.
How To Choose The Best Carbide Drill Bits
Carbide drill bits are defined by three core variables: the grade of tungsten carbide used in the tip, the geometry of the cutting edge, and the shank type. Ignore any one of these, and a set that looks good on paper will frustrate you on the first hole through porcelain tile or rebar-laced concrete.
Tungsten Carbide Grade: YG6 vs. YG6X
The “YG” classification refers to the cobalt binder content in the carbide. YG6 (6% cobalt) offers a strong balance of hardness and toughness for masonry, tile, and concrete. YG6X is a finer-grain variant that delivers slightly higher hardness (up to 90 HRA) and better wear resistance, making it ideal for sustained drilling in harder materials like granite or cast iron. For general home use, YG6 is sufficient; for heavy-duty or repeated masonry work, YG6X extends bit life significantly.
Split-Point Angle: 110° vs. 135°
A 135-degree split-point tip reduces walking on glossy tile and starts cutting immediately without a pilot divot. A 110-degree tip provides a more aggressive bite in softer masonry but tends to wander on hard, smooth surfaces. The 135-degree angle is the preferred choice for tile and glass work because it self-centers upon contact, while 110-degree tips work well for brick and cement block where some surface texture helps stabilize the bit.
Shank Type: Hex vs. Round
A hex shank locks into the drill chuck without slipping, which is critical when drilling through tough tile or concrete where torque spikes are common. Round shanks, common in twist drill sets, are more prone to spinning in the chuck under load. For any masonry or tile application, a hex shank is a functional upgrade that prevents the bit from spinning and marring the workpiece or damaging the chuck.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| BGTEC Masonry Drill Bits | Mid-Range | Porcelain tile and glass drilling | YG6X tungsten carbide, 45° cutting angle | Amazon |
| WildBossy Concrete Carbide Bits | Mid-Range | Concrete and brick anchoring | 135° split-point, hex shank | Amazon |
| EZARC Tungsten Carbide Burr | Premium | Metal deburring and shaping | YG6 carbide, 90 HRA hardness | Amazon |
| Pro Edge 14 Pcs Masonry Set | Premium | General masonry drilling with chip removal | 110° cutting angle, dual U-groove flute | Amazon |
| MACXCOIP M35 Cobalt Set | Budget | Metric metal drilling in hardened steel | 135° spear point, straight shank | Amazon |
In‑Depth Reviews
1. BGTEC Masonry Drill Bits
The BGTEC set uses a YG6X cemented carbide formulation that delivers noticeably better wear resistance than standard YG6 tips. Real users drilling through porcelain tile consistently report 2–3 clean holes per bit before noticeable wear, which is on par with premium single-piece masonry bits. The 45-degree cutting angle is unusual for a masonry bit, but it effectively reduces resistance on initial contact, making this set particularly forgiving on glass and ceramic tile where chatter typically causes edge chipping.
The precision crosshead tip design serves a dual purpose: it locates the hole accurately on slick surfaces without a center punch, and the cross geometry enhances chip evacuation in softer materials like wood and plastic. Several verified owners documented drilling 24 holes through porcelain tile using a water dip technique every 20–30 seconds, with the bit staying cool enough to retain its carbide edge. The quick-fit hex shank works with standard 1/4-inch chucks and eliminates spin-out even under the high torque of a cordless hammer drill.
One important caveat: the manufacturer advises against using water, yet nearly every successful user report contradicts this. Running the bit dry on porcelain accelerates tip glazing. For tile and glass applications, intermittent water cooling is essential to preserve the YG6X carbide. The 10-piece assortment covers the most common diameters from 5mm to 12mm, making it a practical everyday set for wall-mounted shelving, shower fixtures, and glass shelf brackets.
What works
- YG6X carbide holds edge longer through porcelain and glass
- Crosshead tip prevents walking on glossy surfaces
- Hex shank provides stable chuck grip even in hammer mode
What doesn’t
- Manufacturer’s no-water advice contradicts real-world best practice for tile
- Limited diameter range no bits larger than 12mm
2. WildBossy Concrete Carbide Drill Bits
The WildBossy set stands apart with its 135-degree split-point geometry, a feature typically reserved for higher-end masonry bits. The steeper point angle reduces the surface area contacting the material on initial impact, which translates to less walking on smooth concrete and brick faces. Owners report that the split tip engages immediately on masonry surfaces, allowing the bit to self-center without a pilot hole.
The hex shank is machined tighter than many budget sets, which multiple reviewers confirmed eliminated the frustrating chuck-slip problem common with round shank bits when drilling concrete for rebar pins. One user documented drilling through cast iron pots using a stepped approach — starting with the 1/4-inch bit then graduating to the 1/2-inch — with no edge degradation. The tungsten steel carbide tip holds up well under sustained use in cement board and brick, though the uncoated finish offers less heat dissipation than coated alternatives.
A notable size discrepancy was reported by one reviewer: the marked sizes ran slightly smaller than stated. This is worth verifying with calipers before drilling precision anchor holes. The set includes 10 sizes from 5/32-inch to 1/2-inch, which covers the most common wall anchor diameters. For the price, this set offers the best balance of tip geometry and shank stability for general masonry work.
What works
- 135-degree split point bites immediately with no walking
- Hex shank locks securely, no spinning under load
- Sized for standard wall anchors and concrete fasteners
What doesn’t
- Actual diameters can run slightly under stated markings
- Uncoated finish heats up faster than titanium-coated bits
3. EZARC Tungsten Carbide Rotary Burr Bit
The EZARC SB-5 burr is a different tool entirely from masonry bits — it is a solid carbide rotary burr designed for die grinders, not twist drills. The YG6 carbide blank is rated at 90 HRA, which puts it in the hard-wearing range suitable for stainless steel, hardened tool steel, and cast iron. The cylinder shape with end-cut capability allows both side grinding and plunge cutting, which is valuable for enlarging existing holes in metal.
The double-cut flute geometry provides a significantly faster material removal rate than single-cut burrs. One user reported cleaning up 16 holes in 1/2-inch steel plate, creating uniform clearance for yoke pins without needing to swap bits. Multiple reviews confirm that the burr passes through 1/4-inch aluminum and stainless steel utility sinks with no detectable wear after repeated passes. The 1/4-inch shank fits standard rotary tools and die grinders rated for 25,000 to 50,000 RPM.
Because this is a burr bit rather than a drill bit, it requires a reverse milling technique to prevent chatter and tool binding. Users who attempted reciprocating cuts instead of continuous forward rotation experienced diminished control. The included storage case protects the carbide teeth from chipping during transport. For anyone needing to deburr, chamfer, or enlarge holes in hard metal, this burr outperforms any twist drill for the same task.
What works
- 90 HRA YG6 carbide cuts stainless steel without edge wear
- Double-cut design removes material aggressively with smooth finish
- End-cut capability allows plunge and side grinding
What doesn’t
- Requires die grinder or rotary tool not a standard drill
- Not suitable for masonry or tile applications
4. Pro Edge 14 Pcs Masonry Drill Bit Set
The Pro Edge set offers the widest selection among the masonry-focused options here, with 14 bits covering seven sizes in duplicate pairs — a practical arrangement for jobs where you know you will wear out bits on repetitive concrete anchoring. The 110-degree cutting angle is less aggressive for tile than a 135-degree tip, but performs well on brick and cement block where the flatter angle helps prevent the bit from grabbing and breaking the carbide tip.
The dual U-shaped flute grooves are a differentiating feature: they create channels for dust and debris to exit the hole without packing, which reduces friction and heat buildup. Owners who used water cooling reported that the Pro Edge bits lasted roughly twice as long as comparable Milwaukee masonry bits under identical conditions. The industrial carbide-tipped edge holds up through at least 20–30 holes in standard concrete block with intermittent water dips.
The shockproof hex shank is reinforced at the transition point, reducing the risk of snapping at the shank under high torque. The included storage box is sized for each bit diameter with labeled slots, eliminating the need to guess sizes during a project. The primary trade-off: the 110-degree tip will require a pilot divot on glazed tile to prevent walking, adding an extra step compared to the 135-degree WildBossy set.
What works
- 14-piece set with duplicate sizes for high-volume concrete drilling
- Dual U-groove flutes prevent dust packing in deep holes
- Reinforced hex shank resists snapping under torque
What doesn’t
- 110-degree tip walks on glazed tile without a pilot divot
- No sizes larger than 1/2-inch for thicker masonry anchors
5. MACXCOIP M35 Cobalt Drill Bit Set
The MACXCOIP set is built from M35 cobalt high-speed steel rather than carbide, placing it in a different material category despite cobalt steel’s reputation for hardness. M35 contains 5% cobalt, which improves red hardness and allows drilling into stainless steel and cast iron without the edge softening that occurs with standard HSS. The 135-degree spear point geometry provides self-centering performance similar to a split-point bit, though the spear point design is less aggressive in masonry than a true carbide tip.
Metric users will appreciate the complete 1.0mm-to-10.0mm incremental coverage, which is otherwise difficult to source as a single set. One former CNC machinist reviewer confirmed these bits meet professional-grade tolerances for machining work. The straight shank design is appropriate for drill presses and precision collets, though it lacks the slip resistance of a hex shank in standard handheld chucks. One user reported that a bit slipped in the drill press chuck and damaged the shank, suggesting the shank material may be softer than the cutting portion.
This set should not be used for masonry, concrete, or tile. The M35 cobalt steel, while hard, will not withstand the abrasive impact of silica-based materials the way a tungsten carbide tip does. For its intended use — drilling precise metric holes in metals, 3D print post-processing, and plastics — the MACXCOIP set offers a practical range of sizes at a reasonable entry point. The flat metal storage case fits neatly into shallow tool chest drawers.
What works
- Complete metric range from 1mm to 10mm in 0.5mm increments
- 135-degree spear point self-centers in metal workpieces
- M35 cobalt handles stainless steel and cast iron effectively
What doesn’t
- Not designed for masonry, tile, or concrete drilling
- Straight shank prone to slipping in handheld chucks
Hardware & Specs Guide
Carbide Grade: YG6 vs. YG6X vs. M35 Cobalt
YG6 (6% cobalt binder) provides standard hardness for masonry and tile drilling. YG6X uses a finer grain structure to achieve up to 90 HRA, improving wear resistance in high-friction materials like porcelain and glass. M35 cobalt steel is not carbide — it is a high-speed steel alloy with 5% cobalt, suitable for metals but not masonry. For drilling concrete, tile, stone, or brick, always choose a true tungsten carbide tip (YG6 or YG6X).
Cutting Angle: 110°, 135°, and Spear Point
The cutting angle determines how the bit engages the surface. A 135-degree angle minimizes the contact area, reducing walking on glossy tile and glass. A 110-degree angle provides a more aggressive bite suited to textured masonry surfaces like brick and cement block. Spear point geometry is designed for metal drilling and offers self-centering but lacks the impact resistance needed for masonry. Choose 135-degree for tile and glass work.
FAQ
Can I use standard twist drill bits instead of carbide bits on porcelain tile?
Why does my carbide bit need water cooling when drilling tile?
How do I know if a drill bit uses YG6 or YG6X carbide?
Final Thoughts: The Verdict
For most homeowners and DIYers, the best carbide drill bits winner is the BGTEC Masonry Drill Bits because the YG6X carbide and precision crosshead tip deliver consistent performance through porcelain tile, glass, and concrete without the premium price of single-bit specialty tools. If you want a 135-degree split-point that eliminates walking on concrete, grab the WildBossy Concrete Carbide Bits. And for metal deburring and hole enlarging in stainless steel, nothing beats the EZARC Tungsten Carbide Rotary Burr Bit.