TCT Hole Saw Set, 2-Pack of 3/4" (19mm) Heavy Duty Tungsten Carbide Tipped Hole Cutters for Stainless Steel Mild Steel Copper Iron Brass Plastic and More, with Titanium-Plated Pilot Drill Bits

Needed a 3" hole saw for a metal box and this one cut thru it like butter. Made well and very sharp.

Great hole saw for metal. Precise. Carbide cutters make fast work of drilling. The hole diameter was spot-on. This is a steel fill/inspection bung on a Ford 9” axle housing, about to he Tig welded in place.

These bits worked very well. Took my time cut through 3/8 hard steel very well. Very happy with outcome.

Worked good to cut 4 holes in 3/8" steel plate. Had rpm set at 200 and little 3 in 1 oil and compressed air to clean out chips. Better than a normal hole saw. Would recommend for home shop use.

We had to cut about 20 holes in 3/16 inch stainless steel and one bit cut all the holes and it is still going. It took about 30 to 60 seconds for each hole. The trick is to use cutting oil and not to cut too fast.

these bits drilled 3/8 plate steel fast and did a lot of holes

Pilot bit is a POS. No step-down shoulder on pilot bit, so as soon as it cuts through and the carbide bit hits the workpiece, the pilot snaps. Carbide bit pilot hole too small to accommodate a 1/4” hole saw pilot bit, and saw bit is too long to accommodate pilot bits from other carbides. Unless you want to spend more money buying pilot bits that will continue to snap, don’t waste your money.

If you pre-drill (correct procedure) an under-size hole for the pilot and use plenty of drilling lube/paste on the hole saw ,these will even cut through s/s plate !