The Milwaukee 48-66-1020 is a 1/2 self-releasing collet and locking nut assembly. The assembly is a complete 1/4 collet and locking nut assembly for use with Milwaukee routers (series 5615, 5616, 5619 and 5625). For use with 1/2 shank router bits, the assembly includes a premium 1/2 collet with self-release feature that prevents bits from jamming in the assembly. The collets extra-long, 8-segment design ensures maximum bit to collet surface contact to minimize vibration and runout. The precision ground locking nut features extra wide faces to ensure a firm, reliable nut-to-wrench connection. It includes 1/2 collet and locking nut.

All steel construction for long life
Premium 1/2" collet with self-release feature to eliminate bit jamming
Extra long, 8-segment collet design minimizes vibration and ensures bits run true
Large, wide lock nuts provide a secure wrench gripping surface

Milwaukee 48-66-1020 1/2" Self-Releasing Collet and Locking Nut Assembly

Preventing bit from jamming in the assembly