Woodpeckers Precision Woodworking Tools 13-MLFSTOP Flip Stop, 1-Inch Easily adjusts simply by loosening the steel thumb knob Flip Stops add a level of convenience to your drill press table fence These new flip stops feature a zero side-play design that will ensure accurate, repeatable functionality Attach to most 1/4-inch T-track using a standard 3/4-inch long 1/4-20 hex head bolt (included)