Use the fence hold-down featherboard ontable saws, band saws or router tables &keep your hands clear of the tools cutting action. By attaching the feather board to afence, adequate downward pressure isprovided to keep the workpiece secure.Adjustments are made via two star knobswith bolts &two slots for screws. Sizeis 7-3/4"x 3-1/4"x 1/2".