Crank Handles are drop forged, heat treated, quenched and tempered carbon steel construction. These are special purpose hand tool designed for use on machine tools or any service requiring hand rotation. They come in a black powder coat finish or a natural finish. They have square broached openings with a counter bore in the free end of the hub. Special bends, offsets and broached openings are also available. Martin Crank Handle, Broached, 9/16 in Size, 4 in Overall Length, 1-1/4 in Stem Length, 1-1/2 in Base Height, Black, Carbon Steel, Powder Coated