Counterbore Cutter Drive Adaptor for Serdi Seat Guide ...
Use the SerdiStyle Counterbore Cutter Drivers with the GOODSON 3D Fast Cut™ Valve Guide Cutting System. With these counterbore cutter drivers you won't need to change drive adaptors to use indexable counterbore cutters. Now available for 9/16" arbor AND 5/8" arbor cutters. Fit Serdi and Rottler SG9A and SG9M.