The hole surface refurbishment knife (chamfering knife) is suitable for refurbishing the hole surface of the round hole and the screw hole repair of the machine screw. The blade has a single type (CS-Q) and a multi edge type (CS-QM). In addition, the refurbishment angle of the hole is 90 degrees (CS-Q, CS-QM) and 60 degrees (CS-QM).
The CS-G cutting tool is the cutting tool for the plastic injection molding. Its slope is 20 degrees and 30 degrees two kinds, as well as the single blade and the double edge two kinds.