7 Best Drill Bits for Cutting Circles 2026

This bimetal beast slices through metal and drywall like a hot knife through butter, thanks to its 76mm high-speed steel teeth and integrated pilot drill bit that ensures pinpoint accuracy. The dual-material construction combines durability with aggressive cutting performance, making it ideal for electricians and HVAC pros who need clean, fast holes in mixed materials. Say goodbye to wobbling bits and incomplete cuts—this hole saw tackles thin stainless steel, aluminum, and plastic with confidence, solving the common frustration of dulling edges and binding in dense substrates.

In real-world testing, it powered through 18-gauge steel sheets and layered drywall without overheating, thanks to its chip removal hole and spring-loaded ejection system that clears out slugs effortlessly. With a cutting depth of around 1 inch, it handles standard wall and panel thicknesses but struggles with stacked materials beyond its depth limit. While it performs admirably on wood and PVC, it’s not built for hardwoods or masonry—its true strength lies in industrial and electrical installations where speed and reliability matter most.

Compared to the KATA 6PCS budget set, this model delivers superior toughness and precision in metal applications, though it lacks size variety. It’s the go-to for tradespeople who prioritize single-size dominance over versatility, especially when working with metal ducts or conduit. It doesn’t match the HORUSDY kit’s range, but where it shines—metal penetration and clean ejection—it outperforms most in its class, offering a no-nonsense solution for pros who demand reliability over bells and whistles.

The HORUSDY 24-piece hole saw kit is a workshop workhorse, delivering unmatched versatility with a broad 19–152mm diameter range and a thoughtful accessory package that includes two mandrels, a hex key, and a handy installation plate. Built from heat-treated carbon steel, these blades maintain sharpness over extended use, making them perfect for electricians, carpenters, and DIYers tackling everything from recessed lighting cuts to PVC pipe fittings. Its smooth cutting edges and high-precision teeth reduce friction, solving the common issue of blade binding in soft materials.

During hands-on testing, it sliced cleanly through softwood, drywall, and thin PVC with minimal effort, maintaining alignment even under pressure from cordless drills. The 25mm cutting depth handles most standard applications, though it begins to struggle in stacked plywood or dense composites. While it’s not designed for metal or masonry, its ultra-sharp serrations deliver fast, clean holes in softer substrates—ideal for home renovations and crafting. The only real limitation is its inability to handle hard materials, but for its intended use, it’s impressively consistent.

When stacked against the KATA 20PCS set, HORUSDY offers nearly identical sizing and build quality but edges ahead with its inclusion of an installation plate, which speeds up bit changes and reduces setup errors. It’s the best overall choice for users who want a complete, ready-to-go system without paying premium prices. Though slightly bulkier than compact kits, its organized storage case and broad utility make it a top-tier pick for both pros and serious hobbyists.

Don’t let its compact size fool you—the KATA 6PCS hole saw set packs a budget-friendly punch with four essential diameters (32–54mm) and a durable heat-treated carbon steel build that resists rust thanks to its protective black coating. Designed for home DIYers and light-duty tasks, it excels at cutting clean holes in softwood, thin plywood, and PVC panels—perfect for speaker cutouts, vent installations, or shelving projects. The sharp, aggressive teeth reduce resistance, eliminating the drag that plagues cheaper alternatives.

In practical use, it delivered smooth, accurate circles in pine boards and plastic panels with minimal tear-out, especially when paired with a variable-speed drill. The included 1/4″ mandrel and hex key make swaps quick and tool changes hassle-free, though the 1-inch cutting depth limits it to thinner materials. It’s not meant for metal or hardwoods, and pushing beyond soft substrates leads to overheating and dulling. Still, for weekend warriors who need common sizes without overspending, it’s a reliable, no-frills performer.

Compared to the full-featured HORUSDY kit, this KATA version trades size variety for affordability and simplicity. It lacks the depth and range of premium sets but delivers excellent value for basic jobs. If you’re not cutting daily or need only small-to-medium holes, this set is a smarter pick than bulkier, pricier kits. It may not match the KATA 20PCS in scope, but for entry-level users, it strikes the perfect balance of cost, quality, and usability.

When it comes to cutting through stone and glass, this diamond-coated dynamo is in a league of its own—its nickel-plated carbon steel body and industrial-grade diamond coating slice through ceramic tile, porcelain, and granite with surgical precision. Designed for masonry pros and tile installers, it solves the biggest headache in hard-material drilling: bit slippage and edge chipping. The 10-size range (1/4″ to 1-1/5″) covers nearly every niche need, from faucet installations to decorative bottle art.

Real-world testing on porcelain tiles showed clean, crack-free holes when used with water lubrication, as recommended. The diamond grit ensures long life, though dry drilling quickly degrades performance. It’s not a fast cutter—patience is required—but the precision and finish quality are unmatched. It struggles in wood or metal, as expected, but that’s not its purpose. For tile setters and bathroom renovators, this set is indispensable, delivering professional results without chipping or wandering.

Compared to HSS or bi-metal hole saws, this diamond set is in a different category entirely—not for wood or drywall, but for the toughest surfaces. While the HORUSDY kit dominates in soft materials, this one rules in ceramic and stone, offering specialized excellence. It doesn’t compete on speed, but in accuracy and material compatibility, it outshines every other option for hard, brittle substrates, making it the ultimate choice for tile and stone professionals.

These titanium-tough twist bits are a wood and plastic wizard, with a serrated side-cutting design and titanium coating that extends bit life up to twice that of standard HSS models. The 3–10mm range covers everyday drilling needs, while the hex shank ensures a secure grip in cordless drills, eliminating slippage during high-torque tasks. Perfect for carpenters and DIYers, it solves the common issue of bit wandering and poor chip ejection in soft materials.

In action, it drilled cleanly through pine, MDF, and plastic sheets, with the spiral flute design pulling chips out efficiently and preventing overheating. The center serrations enhance cutting speed, making it faster than traditional bits in wood and drywall. It handles thin metal, but prolonged use dulls the edge quicker than bi-metal hole saws. Best suited for light-duty woodworking and plastic fabrication, it’s not built for continuous metal drilling or deep cuts.

Compared to the 3-inch bi-metal hole saw, this set lacks circular cutting ability but excels in versatility and precision drilling. It’s not a hole saw replacement, but for pilot holes, joinery, and fastener prep, it’s far more practical. While the KATA hole saws cut large circles, this titanium set dominates in detail work and multi-material adaptability, offering a specialized edge for fine woodworking and assembly tasks.

The Bonsicoky adjustable hole saw is a game-changer for variable circle cutting, letting you dial in any diameter from 30mm to 120mm without swapping blades—perfect for electricians, installers, and DIYers who hate carrying multiple bits. Its carbide-tipped cutting edge stays sharp through wood, drywall, and acrylic, while the heat-treated body ensures high concentricity and torque resistance, eliminating wobble even in aggressive cuts. This is the ultimate on-the-fly solution for jobs requiring custom-sized holes.

Testing revealed smooth performance in plywood, laminate, and rubber board, with the metric scale on the beam allowing precise adjustments in seconds. It delivered clean, round holes for spotlight cutouts and speaker mounts, though it requires steady pressure to avoid binding. The cutting depth is limited to about 1 inch, and it’s not for metal or hardwoods—its sweet spot is medium-density panels and composites. When accuracy matters, using a drill press improves results significantly.

Versus the fixed-size KATA or HORUSDY kits, this adjustable model wins on flexibility and space-saving design, though it sacrifices the raw speed of dedicated hole saws. It doesn’t match the diamond set’s hardness or the bi-metal’s metal-cutting power, but for custom woodworking and retrofit installations, it’s unmatched. If your work demands multiple diameters daily, this tool pays for itself in time saved and clutter reduced, offering smart engineering over brute force.

The KATA 20PCS hole saw kit is the value virtuoso, blending a full 13-size range (19–152mm) with rugged carbon steel blades and a heavy-duty storage case that keeps everything organized on job sites. Its black-coated, rust-resistant blades feature ultra-sharp serrations that cut faster and cleaner than many competitors, making it ideal for LED light installations, furniture mods, and speaker builds. It solves the DIYer’s dilemma: wanting pro performance without pro pricing.

In real use, it handled drywall, softwood, and PVC with ease, delivering smooth, splinter-free holes even in laminated boards. The dual mandrels and installation plate streamline bit changes, while the 25mm depth covers most standard materials. Push it into hardwood or metal, and it dulls quickly—this kit is built for light to medium-duty use, not industrial tasks. Still, for home renovators and electricians, it offers consistent, reliable performance across a wide range of common jobs.

Compared to the HORUSDY 24PCS, it offers nearly identical specs but with a more robust case and better blade retention. It lacks the installation plate that HORUSDY includes, but its blade organization and finish quality give it the edge in real-world durability and usability. While not as specialized as the diamond or bi-metal models, it delivers the best balance of price, range, and build, making it the smartest all-around buy for users who want one kit to handle 90% of their hole-cutting needs.