I have and use these cutters a fair amount but for some reason, this size seems to have issues. The first one I had cut about 10 holes and then shattered. I ordered this one and it cut 1 hole before shattering. Both cutters were being used in a vertical Mil/Drill where in the work was being held rigidly and the cutter could not wander. I ended up locally purchasing another brand of common hole saws for metal which work well and cost less than 1/2 the price.If you only need to do one or a small number of holes, buy something locally.