This is a hole saw that will drill the specified size holes. I can't say more as I needed this for a specific hole and it worked as I would expect from any hole saw.
They did their job perfectly. I found it a lot cheaper than the HD alternative which I almost bought. Fits my drill press and also fits my 3/8 punch just for testing.
I may have had a defect but it wobbled when cutting. I looked closely and it seemed to me that some of the saw's teeth were curved outwards and others curved inwards. I don't know if that was intentional or not, but it could have been the cause of the problem. I uploaded an image but it's hard to capture in a photo.