3/8"+0.10 (.385"). Sioux Valve Seat Stone Holder.
Valve Seat Stone Holder Sioux And Star Drive With 2 Pilots & 5 Stones USA
Sioux Valve Seat Grinding Wheels 12 Pc With 6 Pcs Pilots + 2x Stone Holder 11/16
SIOUX Valve Seat Grinding Stones 12ps With Stone Dresser & 6pcs Pilots + Holder
NEW Sioux Valve Seat Grinding Wheel 24 Pcs with 14 Pcs Pilots + Stone Holder USA
Sioux Valve Seat Grinder Stone Holder 5 Pcs 11/16" Thread with Drive Ball USA
Sioux Valve Seat Grinding Wheels 12 Pcs Set Stone + Holder Star Drive 11/16" USA
