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

Lasted about 5 minutes

Worked fine for project

Very dull. Threads need to be reversed so the arbor doesnt go spinning off. Just made it through 1 hole in 1 press board. Would buy again.

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

I needed to cut a perfect 4 inc hole hole in an acrylic panel for our bathroom shower system. This hole saw was perfect, most likely will only be used once but for the money it was perfect.

If you plan on using this once, you are fine. But it becomes immediately dull. Overseas JUNK.

Great value

Very heavy, does not cut through plaster. Very dusty. Blades already doled out after using it for seven ceiling lights

Worked as I expected and only 1/3 price as most at the hardware stores.

This one is perfect for holes in the wall, but metal is not recommended