TEMO 10 piece Durable Shiny 1/8 inch (3.2mm) Rotary Tool Collet Bit #480 fit Dremel and Compatible 10 pieces durable shiny Collet bits # 480 for 1/8(3.175mm) diameter bits. Collets are all 3/4" (19.05mm) long. Fit Dremel except discontinued Models 1, 2, and Series 1 or earlier of discontinued Models 260, 270 and 280. It also fit many other compatible rotary tools. Collets are compatible with Dremel 225 and compatible Flex-Shaft attachment.