Miter Gauge Fence Tablesaw Extension System Accurate Aluminum Alloy T Slot Track. STRONG MATERIAL: Table saw miter fence is made of aluminum alloy, can resist wear, maintain lasting accuracy, suitable for woodworking, modeling, handmade and furniture processing 2. DOUBLE SIDED SCALE: The miter gauge fence system is equipped with two scales in metric(mm) and imperial(inch), which are clearly marked for easy reading of values 3. TELESCOPIC FENCE: The main length of the miter gauge fence is 500mm and can be extended to 900mm. High accuracy machining, the minimum adjustment accuracy can up to 0.002mm 4. WIDELY USED: The table saw fence matches the bevel gauge commonly used in the market, and the center line of the T groove is 38mm(1.5in) from the back substrate 5. MULTI FUNCTIONS: This multi t track can be used for a wide assortment of woodworking projects, including creating general fixtures and jigs, workstations. Item Type: Miter Gauge Fence Material: Aluminum alloy Adjustable Length: Approx. 500 900mm / 19.68 35.43in Center Line From Back Substrate: Approx. 38mm / 1.5in. 1 x T Slot Rail 1 x Limit Stop 2 x Slider 2 x Handle.