Unibor Annular Cutter M2 Mag Drill Bit - Ideal for Mild Steel, Brass, Aluminium and Plastic | Size 1/2" X 1", M2 HSS, 3/4 Shank, Pin Included

Using these at a fabricating company that I own. No issues so far. Works great and lasts with proper coolant application. We double check dimensions prior to cutting with them. Sizing is spot on.

We used this to do our fixture table. Unfortunately I didn’t think far enough in advance to get the 2” cut depth. It works as intended & holds tolerance.

Cuts good and has given decent life for the price

I will never use hole saws again. Oh man, in a good drill press or mag drill these things are a life saver. Hole saws dont last but these do. I drilled 8 holes in half inch plate steel with this and it took it like a champ and can still cut more. Dont forget to use some cutting oil to prolong the life also dont forget the pilot pin.

This bit worked fantastic. Had no problem cutting out the 14 holes in 3/4" steel plate.

Cheap, low quality bit. We barely got through one cut and couldn't pull out the slug. Without applying much pressure and also backing off the cut, the bit heated up rather quickly. Used lots of cutting oil but still didn't help. We cut through 1" thick steel plate. Im not sure thinner material would make it better as we weren't even half way through when this thing quick cutting.

Drilling holes in 7/8" thick ibeam and this thing was much faster and took less force to pass through the beam than the other cutters I own by jancy and others. In short it does the job well.

Chucked it in a 3/4" standard collet and it spun with no runout. Machines fishmouths in 1"x.035" tubing perfectly. Also used to machine lightening holes in a case hardened sprocket, and it worked great. No loss in cut quality after 20 holes