These stops have a vertical slot which allows the horizontal adjustment to slide up or down for various workpiece height. The end of the horizontal adjustment swivels 20 degrees from center to allow for clamping on uneven surfaces or misaligned parts. Mounts to either the bottom block of a Sliding Mount Unit or the center block of a Sliding Mount Unit. The horizontal adjustment can face either left or right. Body and base are precision ground. Made from heat-treated 1045 alloy steel with a black oxide finish.