STRAIGHT EDGE GUIDE DESIGNED FOR PALM ROUTERS: Mounts to bosch gkf125ce, pr10e and pr20evs palm routers pr001 and the pr101 fixed bases using the included mounting hardware GUIDES PALM ROUTER ALONG THE EDGE OF A WORKPIECE: For edge-forming operations that use bits without bearings or for creating slots and grooves ADJUSTABLE: Allows adjustment up to 3-5/8 in. in from the edge of the workpiece DURABLE BUILD: Features steel construction