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

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

Worked perfect , spring came off but still worked perfect

I wouldnt recommend this product. This is heavy metal saw but doesnt do the job. Shank is too short for two of my drills and also slips (danger).

No problems easy set up and use

Perfect

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

This is a bad and cheap tools after opening for light in the ceiling it’s was no good I have to go to Home Depot to buy a good one just got yesterday day u shouldn’t sell this item no more

Exceeded my expectations despite the very inexpensive cost! After drilling 15 holes through plaster and plaster board, the blade is still sharp. I just needed it to last long enough for this one project, but looks like I can keep it in the toolbox for future.

I had to drill 10 holes in a ceiling for some recessed lights. By the time I was done with the last hole, it was so dull I wasnt sure it was going to be able to get through. If its supposed to handle the metal they say it can it should still be good for many projects to come. Anyone see any teeth there?

Used for installing a kitchen hood unit air exhaust in side of house. Only used once. Did the job well. Nice clean cut. Perfect 6” hole. Can’t attest to longevity as this was a one and done use for me. But based on my experience, I would recommend!