The DeWalt NA613028 1/4in Collet & Nut Assembly is a replacement router collet assembly for compatible DeWalt DCW620 cordless plunge routers. The 6.35mm collet securely holds compatible 1/4in shank router cutters during operation and is suitable for replacing a worn, damaged or missing original collet and nut assembly. Manufactured to the correct specifications for a precise fit and reliable cutter retention.