Review on 🔧 Enhanced Precision and Convenience: Introducing the Premium Countersink Carrying Piece Tri Flat by Alejandro Labustin

For a cheap set of countersinks I was very impressed. Countersink twenty-two 5/16-inch holes in a 1/4-thick board with a router. Cut the last hole just as well as the first. I didn't even use cutting lubricant as the bit seemed to be clogging with sawdust. However, I let the bit cool down after every three or four holes. Used them with a hand drill, the piece I was working on was too big to make on a drill press.