A stock DeWalt 611 router only accommodates 1/4" shank bits, and doesn’t support precision cutting. This Precise Bits Precision Collet Kit makes it possible to use 1/8" shank bits with the router to do precision work. The total indicated runout (TIR) on this collet is < 0.0004" (0.01mm).
The kit includes a collet nut, precision-grade collet, and wrench for tightening.
PLEASE NOTE – the precision-grade collet can only be used with the specialty collet nut included in this kit. It cannot be used with a standard collet nut.