Exaktor EX100/80 Table Saw Fence System with 80-Inch Front and Rear Guide Rails compatible with the 2-Inchx3-Inch front rail systems on most commercial table saws. all parts of the fence are replaceable in the event of wear or accidental damage hold-downs and shop-built jigs can be quickly attached to the fence hairline adjustable cursor allows you to position the fence in relation to the thickness of different saw blades for a precise cut without removing the fence from the saw table, you can quickly align the hairline cursor with the scale to ensure the fence is parallel to the saw