3" TCT Hole Saw for Hard Metal, Heavy Duty 75mm Tungsten Carbide Tipped Hole Cutter with Spring-Loaded Pilot Drill Bit for Stainless Steel, Metal, Iron, and Plastic

I was worried this wouldn’t hold up to drilling multiple holes in my shipping container so I ordered the two pack. The first one did the job and is still good as new. Best hole saw I’ve ever owned and I’ve had a few.

I used this 4 inch hole saw to cut holes in mild steel sheet metal. It made clean cuts without issues. It is very low priced for what you are getting.

as described by seller. It also comes with a note to contact if you need to.

I actually was impressed when I pulled them out. I needed to cut a very strong hard thick hdpe tank for a sump. These are so aggressive I almost broke the container. I'd bet you could cut through dang near anything with these if lubricant was used to cool the blades. I personally love them they cut through wood like it's foam insulation. They are probably not perfect for the plastic job I did but for cutting holes for construction these are beast mode. I'll be ordering more sizes. Used these to cut a hole for wiring in the floor. This cut through thinset is a half a second through the 4 layers of wood and vinyl easily. I got worried when I heard a nail but it chewed through it so fast I was still wondering if it was going to be a problem when the bit popped through the bottom. If you need a hole in your home for plumbing or wiring. Just get one they chew holes with almost zero effort. Watch out on plastic it can catch and cause a problem.

Cheap piece of s*** that immediately sheared off. Order three and a half inch to cut through sheet metal managed to get the center drill bit in and then I immediately started sharing. Replacement ordered and it did the exact same thing immediately didn't even get to scratch out a metal ring.

I used this 7/8 hole cutter in 1/2" and 3/8" steel plate. Used one of the two bits to cut four holes in 1/2" and two holes in 3/8. It worked but seems more suited to 1/4 thick steel. It cut to about 1/4" depth quite well, after that it seems to be unable to effectively remove the metal and kind of clogs up. Still, it punched through and the spring on the centering/pilot bit discarded the slug properly. Beats the hell out of using a twist bit or standard hole saw. Two pack is very worth the cost. Still, I can only give four stars. Wish I had a mag drill and annular cutters but this works when only need a few holes in thick steel.

Works well for shallow holes. Wish they didn't have that shoulder on the top. And were the same diameter as the hole saw. I need them to go some 1 3/4 inch inner diameter couplings. The work as designed!:

Great cutter! Smooth, fast cutting. No chatter.