Milwaukee 48-66-1020 1/2 in. Self-Releasing Collet and Locking Nut AssemblySince its founding in 1924, Milwaukee has focused on a single vision: to produce the best heavy-duty electric power tools and accessories available to professional user. Today, the Milwaukee name stands for the highest quality, durable and reliable professional tools money can buy.Complete 1/2 in. collet and locking nut assembly for use with Milwaukee routers (series 5615, 5616, 5619, and 5625). For use with 1/2 in. shank router bits, the assembly includes a premium 1/2 in. collet with self-release feature that prevents bits from jamming in the assembly. The collet's 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. Includes 1/2 in. collet and locking nut.Milwaukee 48-66-1020 1/2 in. Self-Releasing Collet and Locking Nut Assembly Features:; All steel construction for long life; Premium 1/2 in. 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 surfaceThe Milwaukee 1/2-Inch Self-Releasing Collet And Locking Nut Assembly is designed for use with Milwaukee routers (series 5615, 5616, 5619, and 5625). It's also for use with 1/2-inch shank router bits, for the assembly includes a premium 1/2-inch collet with self-release feature that prevents bits from jamming in the assembly. The collet's extra-long, eight-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. The assembly includes a 1/2-inch collet and locking nut.