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

Needed an inexpensive hole saw for installing through the gable vent, and this did a quick work of it. Cut fine through wood siding, vinyl siding and drywall. Spring on the drill shank helps pop out the pieces it cut.

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

Broken part

Seemed like a great bit for the price, but is starting to dull after drilling only7 holes in drywall, i would guess it would be just as dull after 1 sheet of 3/4 plywood. But you get what you pay for. It should work to finish this project since im only drilling drywall, then it will be tossed.

The arbor is too small to fit.

Doesn’t work... do not buy

Well it makes holes

The yellow hole saw stripped in the mandrel in the first day of using. Metal too thin. Of no use to me after a hole or two cut.

Item came with wrong arbor. The thread size of the arbor was not the same as the thread size of the hole saw.

I have no complaints I used it to cut over a dozen hole in 1in thick hardwood for a project. Works great