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

Well it makes holes

Not a good buy. Dulls very quickly

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

Missing the arbor

The center arbor hole was threaded crooked resulting in such severe wobble. Not usable without modification. Got thru the 2 holes I needed to drill.

Bought this to drill holes for corn hole boards I make. Works decent for this task, but I would use it on metal. The spring on the drill is a bit odd and I am not really crazy about it... I honestly dont think it will last so not too worried about it. I am also not too crazy about how the drill holder mounts to the saw portion. The quality of the saw seems good and will last for my needs. Overall, for the price and how I use this, it works fine and I happy with my purchase.

This hole saw was the perfect size but only to be let down by all the teeth being gone after 1 hole was cut. I am going through plaster but it states its good for plaster. Might be fine for drywall/sheet rock but Im not sure. Im very disappointed in this purchase

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

... or maybe a bit less. Being the cheapest 4 hole saw on Amazon, it clearly doesnt aim for quality, but it got my job done. Which was a neat and tidy 4 hole in my ceiling. It wobbled a bit; no big deal. And the arbor has no securing mechanism, neither locknut nor pins, so if you take your finger off the trigger suddenly to stop it, the saw flies off the arbor into hopefully vacant space. My advice is to screw it on as tightly as possible and slow the drill gradually.

Very nice for the price and worked for my cornhole boards.