Dremel 5 Piece Quick Change Collet Nut Set

Chucks are the most accurate way to fix an accessory in a Dremel. The collet features small identification rings around its shank. These rings correspond with the size of the collet: 0 rings = 1/8", 3 rings = 3/32", 2 rings = 1/16", 1 ring = 1/32".

Price: £ 10.99 from Conrad Electronic