Each housing is stamped "GROVER DELUXE" and features permanently lubricated gears and 14:1 ratio. Includes press-in bushings and mounting screws. Requires 11/32"(9mm) peghead holes. The top 3 screws on each plate are spaced 1-3/8"(35mm) and the lower screw is spaced 1-1/8"(28mm).