Including DIY router lift kit to add height adjustment function to your router (need to drill hole in router base by yourself). Multi-functional insert plate with rings, suitable for making your own router table for high-precision woodworking. Features: Multi-functional insert plate with rings, suitable for making your own router table for high-precision woodworking. Made of high-strength aluminum alloy for long-lasting use. Convenient center hole bushing used for the router is aligned so that it is centered in the bit hole. It is easy to use, saving effort and labor, and easy to manipulate and extend the use of the trimmer at the same time. High-precision CNC machining makes perfect quality. Specifications: Material: Aluminum Alloy Color: Red, Black (Optional) Item Size: 300 * 235 * 9mm / 11.8 * 9.3 * 0.4in Item Weight: 1320g / 2.9lb Package Size: 350 * 250 * 40mm / 13.8 * 9.8 * 1.6in Package Weight: 1420g / 3.1lb Package List: 1 * Router Table Insert Plate 2 * Insert Ring 1 * Hex Wrench 1 * Fixing Screw Packs 1 * Adjustment Kit