Use the fence hold-down featherboard on table saws, band saws or router tables & keep your hands clear of the tool’s cutting action. By attaching the feather board to a fence, adequate downward pressure is provided to keep the workpiece secure. Adjustments are made via two star knobs with bolts & two slots for screws. Size is 7-3/4" x 3-1/4" x 1/2".