WIDE LIFTING RANGE: The base supports lifting height up to 51mm2.0in, supports machine diameter is 63.8mm2.12in) to 65mm2.56in, ideal for small trimming machines. And The size of the router workbench board is 235mm x 120mm / 9.25"x 4.72", and the Installation hole size for flip board: 85 * 85mm (3.35*3.35in) and 45 * 56 mm (1.77*2.2in) and 62 * 70mm2.44 * 2.76in). (The size on the picture shall prevail) EXCELLENT MATERIALS: Router plate kit, composed of aluminum alloy and stainless steel, with high strength, rust and corrosion resistance. DIY ROUTER LIFT TABLE: This router lift is suitable for making your own router worktable for high accuracy woodworking, easy to install and operate. EASY ADJUSTMENT: Router insert plate kit comes with crank handle, you can easily and accurately adjust the height of the router bit from above the desktop. FIRM CLAMPING: The router lift ensures firm and stable clamping, which is not easy to fall off and improves the overall efficiency. ATTENTION Please check our product size to make sure it matches what you need. The detailed dimensions are on the picture.