Improve the grip for bits in our rotary tool line with a genuine Dremel collet set. With the 480, 481, 482, 483 collets, plus a quick-change collet nut, you can easily use a wide range of bits. Five piece set.Features These rings correspond with the size of the collet: 0 rings = 1/8-in, 3 rings = 3/32-in, 2 rings = 1/16-in, 1 ring = 1/32-in Individual collets are compatible with flex-shaft tool hand-pieces #235 and #237 For use with all rotary tools except discontinued models 1, 2, and series 1 or earlier of discontinued models 260, 270 and 280 The collet features small identification rings around its shank Provides the optimal grip for bits offered for our rotary tool line Use TipsFor best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto the bit. Collet Sizes: 1/32 in, 1/16 in, 3/32 in, 1/8 in Compatibility: Flex-shaft tool hand-pieces #235, #237, 4300, 4000, 400, 3000, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780, 770, 7700, 750 Material: Steel Overall Length: 1 in. Color: DimGray, Silver Etched / Stamped Size Identification: Yes Country of Origin: United States of America