Acrylic base for routers. Base is pre-drilled to fit most popular routers and can easily be drilled to fit others. Two separate attachment points allowing routing 0 - 127mm (0 - 5") from the edge. Includes standard 25mm (1-3/16") guide bushing insert and screws to attach router. Accepts additional inserts for multiple size openings. 10mm (3/8") thick base with 13mm (1/2") thick reversible edge guide.