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 anodizingFixed hole number: 600mm: 4pcs; 800mm: 5pcs; 1000mm: 6pcs1220mm: 7pcsFixed hole spacing (mm):600mm:173-174-173800mm:1801000mm:1841220mm:190Number of screws: 600mm: 5pcs; 800mm: 6pcs; 1000mm: 7pcs1220mm: 8pcsPackage List:1 x Slide Slab with Stainless Steel ScrewsNote: Cooperate with T screw special slot (M6 or M8 special T screw) does not contain, need to buy separately.