Luomorgo 4.5 inch Hole Saw, 1 1/4 inch Cutting Depth HSS Bi-Metal Hole Cutter for Wood Cornhole Boards Plastic Drywall & Metal Sheet

Havent tried on metal. Works well. The arbor is holding up, so far.

Very easy to drill

We used this to drill holes in a wooden beam to install lighting. It worked very well

Good product for a good price

It works great.

Using it to cut holes for hydroponics rails. Makes hole just big enough for trade gallon pots to fit in. Only cutting about 1/8” through the top of rails but does the job and it includes an extra arbor that fits my Lennox hole saws too.

This is a great bit for the price. I have the 6 1/4 and a 4 1/4 both were used on putting lights in my ceiling works way better than the carbide bit you get at Lowe’s it creates less dust, but make sure you use a dust bowl and it’s virtually dustless. Just have to go a little slow when starting but after that you can go full blast and it doesn’t catch well for me it did it anyways.

It has a unique arbor which is very light duty. You cannot use arbors you already have which are more robust.

My house is old. I have installed LED lights in most of the rooms at this point, and these hole saws never seem to last too long. This one worked fine for its purpose, and was cheaper than the one I bought before from Home Depot. So that helps. For context, all of the ceilings in my home are double layered drywall, with a layer of wire mesh in between, which is beyond annoying. The teeth on these saws always get worn down fairly quickly because of this. Im sure that eventually I will have to replace this one as well. The last project I did was in my living room, which required 10 lights. I used this saw for about 6 of the 10 holes needed. The teeth on this one still seem good so far.

Advertised as 3 but is only 2-15/16. May not sound like a big deal, but if the hole must be 3, then this falsely advertised item will not do the job!