MITUTOYO Gauge Block Set Collet Chuck for CNC Lathe 6 Medium Hard Wire Cutting Capacity 6 Medium Hard Wire Cutting Capacity (mm) 2 Specifications shown are for the base model IEC 60947 19 [Icw] rated short time withstand current Trip unit characteristics Thermal magnetic L : for overload protection (long time) I : for instantaneous short circuit protection [Ir] Long time pick up adjustment range Fixed [Iu] Long time pick up adjustment range [tr] Long time delay adjustment range [Isd] Short time pick up adjustment range [tsd] Short time delay adjustment range [Ii] Instantaneous pick up adjustment range Fixed 12 x In