PORTER-CABLE 42040 3/4-Inch Router Template Guide;

PORTER-CABLE 42040 3/4-Inch Router Template Guide; Porter Cable 42040 Template guides are a great way to guide a router for a very controlled cut using a pattern or template. The guide attaches to the router base to keep the bit a specific distance from the templates edge while allowing the bit to cut in where needed. Dimension: OD 3/4", ID 21/32", Distance past base 7/32".