Bushings are designed to fit into the router sub-base and guide the router through curved and complex shapes. Bushings must be used with a template and the template must be offset to accommodate the bushing diameter. Includes 7 different guides, #ADP-09 adapter and 2 threaded lock collars in a molded plastic case.Our template guides are suitable for the following brands and models:B&D - All modelsDeWalt® - DW624, DW625DeWalt® - DW610DeWalt® - DW614, DW615Elu™ - 2720, 2721, 3328Freud® - FT2000E, FT2000Hitachi - TR8, TR12, M12SA, M12VPorter-Cable® - All modelsSkil® - 1870, 1875Our template guides fit perfectly in any base with a 1-3/16" diameter center hole.Template guide kit includes:Qty: (1) Inner Diameter 1/4", Outer Diameter 5/16" template guideQty: (1) Inner Diameter 9/32", Outer Diameter 3/8" template guideQty: (1) Inner Diameter 11/32", Outer Diameter 7/16" template guideQty: (1) Inner Diameter 13/32", Outer Diameter 1/2" template guideQty: (1) Inner Diameter 17/32", Outer Diameter 5/8" template guideQty: (1) Inner Diameter 21/32", Outer Diameter 3/4" template guideQty: (1) Inner Diameter 5/8", Outer Diameter 51/64" template guideQty: (2) Lock NutsQty: (1) Adapter