Including DIY router lift kit to add height adjustment function to your router (need drill hole in router base by yourself). Multi-functional insert plate with rings, suitable for making your own router table for high precision wood processing. Features: Multi-functional insert plate with rings, suitable for making your own router table for high-precision wood processing. Made of high-precision aluminum alloy resistance for long life use. Convenient center hole RING used for router is aligned so that it is centered in the bit hole. It is easy to use, saving effort and labor, and easy to handle and extend the use of the cutting machine at the same time. High precision of ;CNC machining makes perfect quality. Only compatible with Bosch GKF550 and Makita RT0700C. Features: Material: in aluminum alloy Item size: 235 * 120 * 9mm / 9.3 * 4.7 * 0.4in Item weight: 500g / 1.10lb Package size: 280 * 185 * 15mm / 11.0 * 7.3 * 0.6in Package weight: 510g / 1.12lb < p> Package List: 1 * Router Table Insert Plate 4 * Insert Tools 1 * Screw Packs fixing