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 shaperUse 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 alloyTreatment: surface anodizingSize: 300mm/11.8in, 500mm/19.7in, 600mm/23.6in(Optional)Fixed hole number: 300mm: 2pcs; 500mm: 3pcs; 600mm: 4pcsFixed hole spacing (mm):300mm: 220500mm: 210600mm: 173-174-173Number of screws: 300mm: 3pcs 500mm: 4pcs 600mm: 5pcsPackage List:1 x Slide Slab with Stainless Steel Screws