This Flush Mount Miter Slide Hardware Kit lets you fix jigs to any standard miter slot with no protruding knob to get in the way. Perfect for crosscut sleds or any jig requiring a smooth surface for operation. Includes one expandable miter slot adapter to fit any standard 3/4″ wide x 3/8″ deep miter slot, as well as two different length screws for use with either 1/2″ or 3/4″ material.