Replace the worn or broken Keyless Chuck in the Dremel 1/32" to 1/8" Shank Rotary with these new Dremel 4486 2615004486 Keyless Chuck replacement parts. These Dremel 4486 2615004486 Keyless Chucks are compatible with Dremel models; 1/32" to 1/8" Shank Rotary Accessory (sold separately). Please reference the tool manual before purchasing to ensure the proper fit and care of these tool parts. These are genuine Dremel power tool replacement parts.