Special Threads, Gauges Intro CPC-S Inspection Tools SP Check Pins (Straight Type) for Bored Hole for Cutting Taps FEATURES SL HSS HSS material increases considerably the Check Pins life.A set of 5 Check Pins allows accurate checking of boredhole diameter and length. For cutting tap. PO ST ROLL YMW-CPC-S CARBIDE TYPE: CPC_01 DCON D1 D2 L1 L1 L2 L2 LONG L3 L3 L L LF HAND TAPS EG (STI) SPECIAL THREADS, GAUGES YMW THREAD MILLS DIES CENTER DRILLS Technical info 560