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Product Item #: DRE4485 a DREMEL Quick Change Nut/Collet Set which allows for quick and easy bit changes without the use of a wrench.
The quick-change collet nut is made of steel and is knurled for easy finger-tip bit changes. Each collet is a slim, aluminum tube used for holding a bit. Each 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" For use with a variety of Dremel tools, attachments and handpieces (except Dremel's discontinued Models 1, 2, and Series 1 or earlier of discontinued Models 260, 270 and 280). This kit will fit the #225 Flex-Shaft Attachment (DRER0825). Individual collets are compatible with Flex-Shaft Tool handpieces #235 (1/2") and #237 (3/4"). Allows you to quickly change collets to accept bits with shanks of 1/32" to 1/8".
(1) Collet Nut (4) Collets