KATA 20PC Hole Saw Set and 6inch Hole Saw…

The Verdict

The $20 Hole Saw Kit That Actually Earns Its Keep

Most hole saw kits at this price point are disposable junk — thin steel cups that bend on the second cut and pilots that snap off before you finish a door. The KATA 20PC set isn’t that. It’s the rare budget kit that balances range, durability, and cost in a way that makes sense for a homeowner who’s tired of borrowing tools.

What’s in the Box

You get 20 hole saws ranging from 3/4-inch up to that headline 6-inch monster, plus a 3/8-inch quick-change arbor and two pilot drill bits. The saws are bi-metal with cobalt teeth — that’s the same construction as Milwaukee’s entry-level kits, just at a third of the price. The 6-inch saw is the differentiator here; most sets cap out at 4 or 5 inches, so you’re getting genuine utility for ceiling speakers, recessed lights, or plumbing access.

How It Cuts in the Real World

I ran the 1-1/2-inch and 2-inch saws through 3/4-inch plywood, then tested the 6-inch on drywall with a 1/2-inch chuck drill. Small sizes cut clean and fast — the cobalt teeth leave a smooth edge with minimal tear-out on the exit side. The 6-inch cup chewed through drywall without drama, though it demanded a firm grip and steady feed pressure.

On mild steel (like an electrical panel), the smaller saws worked but slow down noticeably. You’ll want cutting oil and a slower drill speed — the teeth handle it, but this isn’t a daily metal-cutting tool. One buyer put it plainly: “I’ve used these for door locks, electrical boxes, and a 4-inch hole in a steel door — they’re still sharp after a dozen cuts.” Another noted, “The arbor is the weak point — the pilot bit stripped after heavy use, but KATA sent a replacement free.”

What Buyers Consistently Praise

Across 215 ratings at 4.3 stars, the pattern is clear:

• Value for money — “Bought this for one job, used it for five. Best $20 I’ve spent on tools this year.”
• Size range — The 6-inch saw alone justifies the purchase for anyone doing ceiling work.
• Cobalt teeth — Multiple reviewers mention the teeth staying sharp through wood and light metal.

Where It Falls Short

The 6-inch saw is the star, but it’s also the problem child. It needs a drill with actual torque — a 12V driver will stall and overheat. The pilot bit is too short for deep cuts with the big cup; on a 2x4, you’ll need to pre-drill or the bit won’t guide the saw true. The carry case is also flimsy — hinges feel like they’ll break after a few months in a toolbox, and one reviewer confirmed that exact failure. For the price, it’s tolerable, but don’t expect Milwaukee-level case quality.

Who Should Buy This

• DIY homeowners doing door locks, electrical boxes, or ceiling fan installs — this is your kit.
• HVAC or low-voltage installers who need a 6-inch saw for duct or speaker work without dropping $60 on a single tool.
• Not for pros cutting metal daily — you’ll burn through the smaller saws faster than a premium set.

FAQ

Will the 6-inch saw work on a cordless drill? Yes, but only if it’s an 18V or 20V brushless model. A 12V driver won’t have the torque. Use a corded drill for the best results.

Does the arbor fit all 20 sizes? Yes — the quick-release arbor handles every saw in the kit. The pilot bit is replaceable, though you’ll want a spare for heavy use.

Can these cut through metal? Mild steel up to about 1/8-inch thick, yes, with cutting oil and a slow speed. Stainless or hardened steel will dull them fast.

The Verdict

Rating: 4.2/5 — The KATA 20PC set is a legitimately useful addition to any homeowner’s toolbox. The 6-inch saw is the standout feature, the cobalt teeth hold up better than the price suggests, and at $19.99, it’s cheaper than buying a single premium 6-inch hole saw alone.

Buy it if: You need a versatile kit for wood, drywall, and occasional light metal work, and you want the big 6-inch option without the premium price tag.

Skip it if: You’re a professional cutting metal daily, or you need a rugged case that survives job-site abuse — spend more on a Milwaukee or Diablo set instead.

The KATA 20PC set is proof that budget tools don’t have to be disposable — just keep your expectations realistic on the case and the pilot bit.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.