Collets are used when the very best accuracy is required. Each collet has a 1mm compression range and so can be used on Imperial or metric dimensioned materials, saving costs. Easy to use and ideal for repeat turning operations, these will make the accurate machining of small parts a doddle. This kit contains the collet holder (505124) complete with mounting bolts and 'C' spanner contained in wooden box and 7 collets: 4-3mm, 6-5mm, 8-7mm, 12-11mm, 14-13mm and 16-15mm. Other sizes of ER32 collets available from stock.