PORTER-CABLE 45005 Centering Cone for Compact Router Steel pin and; durable plastic cone allow for precise centering when changing or adjusting sub bases Simply place pin in router collet, place cone on pin and; tighten screws on sub base Easy to use Quick to setup Steel pin and; durable plastic cone allow for precise centering when changing or adjusting sub bases Simpy place pin in router collet, place cone on pin and; tighten screws on sub base Easy to use Quick to setup