Constructed of clear polycarbonate, this high-strength router sub-base fits Milwaukee® router model 5625-20. The industry standard 1-3/16 in center hole pattern accepts Milwaukee® as well as other lock nut style template guides for pattern routing. with an industry standard diameter (7 in), bolt design and bolt-hole pattern, the sub-base is quickly installed on Milwaukee® as well as other popular production routers. Milwaukee® 49-54-1026 Center Hole Router Sub-Base, Use with 5625-20 Router, 1-3/16 in Center Hole, 6 in dia