1、Made of premium aluminum alloy material, high strength, durable in use. 2、Ideal for shop built tables for routers, band saws, drill presses and more. 3、The T-bar slides smoothly into the miter track or miter T slot on your table saw, band saw or shaper 4、Use the T-bar to build all types of jigs, fixtures or sliding sleds for your shop. 5、Solid, durable extruded anodized aluminum maximizes T-track efficacy, machining and  accuracy. Features: Made of premium aluminum alloy material, high strength, durable in use. Ideal for shop built tables for routers, band saws, drill presses and more. The T-bar slides smoothly into the miter track or miter T slot on your table saw, band saw or shaper Use the T-bar to build all types of jigs, fixtures or sliding sleds for your shop. Solid, durable extruded anodized aluminum maximizes T-track efficacy, machining and  accuracy. Specification: Material: Aluminum alloy Treatment: surface anodizing Size: 300mm/ 11.8in, 500mm/ 19.7in, 600mm/ 23.6in (Optional) Fixed hole number:  300mm: 2pcs;  500mm: 3pcs;  600mm: 4pcs Fixed hole spacing (mm): 300mm: 220 500mm: 210 600mm: 173-174-173 Number of screws:  300mm: 3pcs  500mm: 4pcs  600mm: 5pcs Package List: 1 x Slide Slab with Stainless Steel Screws