JIECHENG Bi-Metal 4 inch Hole Saw with Arbor Mandrel for Cutting Wood,Cornhole Boards,Drywall,Plasterboard,Plywood,Steel,Aluminium,Brass,Copper,Zinc,Tin,102mm

Did exactly what it was supposed to do and was easy to use. Core came out easy and stayed sharp after several hours of use. Good job

Used it to cut some holes for downlights. Worked well.

Works as expected, great value for the money.

This saw and arbor feel solid and looks like it’s a good price/quality ratio.

Cut corn hole holes perfectly.

There are a lot of review that say the blade dulled after one cut, or the threads stripped, etc. I had none of those issues. I bought this to drill holes in my RV floor, which is 3/4 plywood. Four successful holes later, its still pretty sharp and totally usable for future projects. You do have to watch when you stop the drill that if the saw is in free space, inertia will keep it spinning and it will unscrew from the arbor. After I cut a few holes, it was firmly screwed down to where I cant even unscrew it anymore, so the unscrewing was a temporary problem for me. I guess because I was expecting something unusable, I am really pleased with how it worked. Not for cutting metal for sure, but if you just want a few holes in plywood or sheetrock, this is a great cheap alternative.

The center bit broke in half on the outer wall. The teeth were not sharp at all. Its buy point is cheap for a reason.

Arrived quickly, works great. Cutting 4 hole for soffit venting, this hole saw cut through cedar siding and celotex sheeting easily. Used with Maurice Franklin 4 round aluminum louvers and they worked perfectly together. This saw uses a 3/8 shaft so your cordless drill can be used.

Used it to make a feral cat house. Cut right through a double sided cooler & didn’t leave rough sides to the cut.

Didnt work well.