The DeWalt 868149-00 Genuine 1/4" (6.35mm) Collet is an original replacement router collet for compatible DeWalt plunge routers. Designed to securely grip and hold 6.35mm router cutter shanks within the collet nut assembly, it provides reliable cutter retention during routing operations. Ideal for replacing a worn, damaged or faulty collet to restore secure cutter clamping and accurate routing performance.