?Build an accurate table saw sled fast. The?ZEROPLAY Miter Bars takes cross cut table saw sleds to the next level of precision.FEATURES:Hassle-free miter bars using One-Touch Calibration.No slop, side-to-side play or seasonal warping.Top-down installation for easy and fast mounting to jigs, fixtures and sleds.Easily retrofit existing cross cut sleds or jigs.Fits standard (3/4? x 3/8?) T miter slots, ShopSmith and General miter tracks.Includes 1?ZEROPLAY miter bar and cross cut jig plans.9.5-Inch length for each miter bar.