CREATE CUSTOM DOVETAIL TRACK GRIDS: The MatchFit Grid Router Guide helps you build precisely spaced dovetail tracks fast; Ideal for custom workbenches, jigs, and sleds, this outer base makes it easy to route a complete dovetail grid on panels of any size NO MEASURING OR MARKING NEEDED: Self-indexing base ensures each groove is spaced exactly 4" on center; Create consistent, repeatable grooves across full 4x8 sheets or compact sleds with minimal setup and zero guesswork FAST AND EASY OPERATION: Simply set your desired depth and let the router template guide do the hard work for you; The smart base ensures precisely accurate grooves every time WORKS WITH MOST STANDARD ROUTERS: This self-indexing router guide is compatible with most routers with 4"–7" bases and 1–3 HP motors; Requires a 1-3/8" Porter-Cable style bushing base plate or adapter (router available separately) MADE IN THE USA: Easily create dovetail tracks for your MatchFit Dovetail Clamps with this high-grade plastic router guide, made in the USA; Requires a 1/2" x 14 degree dovetail router bit and 1/4" relief router bit (available separately) The MatchFit Grid Router Guide is an innovative handheld router guide that allows you to create custom dovetail track and clamping grids on panels of any size, from compact jigs to full 4x8 sheets. The self-indexing base ensures every groove is spaced precisely 4 inches on center, removing the need for measuring, marking, or using straight edges. Simply attach the base to your compatible router, set the depth of the required router bits, and guide the clamping tool across your panel—each pass aligns automatically, producing a smooth grid. Build the ultimate workbench with expansive clamping coverage and extra-wide end vises, or create infinitely adjustable jigs and fixtures for any woodworking project with these woodworking tools. Grid Router Guide only, router accessories not included. Requires a 1/2" diameter x 14 degree dovetail router bit and 1/4" relief router bit (available separately). Compatible with most routers with 4"–7" bases and 1–3 HP motors. 1-3/8″ Porter-Cable style bushing base plate or adapter required (router available separately).