Review on Accusize Industrial Tools Slugger 0519 0002 by James Holker

Fairly durable as long as you keep the cutter head in coolant and low RPM they seem to last a long time last. We drilled just over 50 holes (B8x31 I-beam and 7/16" flange thickness) with a 9/16" drill bit and the cutter head is still sharp. The quality of each cutter is very good and stable. The knockout pins are very strong and I've never had a bullet stuck (good bullet release). I like that the wire cutters come in a very nice protective case.