Revain asked me to review this Forstner bit. To be honest I only drilled ONE hole in it. My set of large Forstner bits goes from 1.5 straight to 2.0 and I needed a 1.75 hole to make the jig. This beat did it. The beat is sharp and hard. The hole was straight with clean sides. It worked great. I can't tell what happens after 100 holes or 500 holes. Another good thing: I ordered it on Wednesday evening and received it on Thursday afternoon. Well done Raven.