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

I used this to cut 15 recessed light holes and still has life left. I did use it on plaster and it cut through about half way. So good for drywall not good for plaster. I would buy this again

Great tool to put holes in for recess lighting.

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

I ordered this in 120MM and a JIECHENG 4. This one is much heavier and not just due to diameter, It also comes with 2 arbors, my preferred with the side pins and the simple thread in and a total of 3 bits. The JIECHENG only has the simple thread in and no extra bits. I usually run Milwaukees but didnt feel like heading to the store for a 4 and a 120mm just wasnt going to get stocked here. I cant tell you how either will stand the test of time as Im going to just add some vents/ducts through plastic and thin wood a few times and then let these collect dust for the rest of time. Still weight + extras + being 1$ cheaper makes this a winner for someone who only needs to make a few holes. Sorry that I will not be using it more so I cant give you a better idea about long term value. I dont think anyone runs a 120mm on a small drill so I do not think the extra weight will be a problem.

I needed exactly 4” in a hole saw. As it turns out, 100mm is labelled only 3 15/16”. That being said, it makes perfect 4 holes which have worked for all my 4 mounting applications.

Do the job.

Good product for a good price

Could have more teeth to make it not catch so hard when you start.

Bought this item to make the holes to install the recessed lighting in my kitchen. Worked fine once I got it on right.

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!