5C Collet Block SET Square for 5C collets1-3/4×1-3/4×2-3/4Hex for 5C collets1-3/4×1-3/4×1-3/4×2-3/4Quick acting lever collet closer1-11/16×4Item NO,561476Complete set in wooden case consists of one square block, one hex block, one handle and one collet close