Boston   machine heads for guitar, metal shaft, 6x left, metal buttons, with cover, gold

Boston   machine heads for guitar, die cast, 6x left, deluxe buttons, black

Boston   machine heads for guitar, metal shaft, 6x left, metal buttons, with cover, chrome

Boston   locking machine heads guitar, die cast 6L, low gearing 19:1, chrome

Boston   locking machine heads guitar, die cast 6L, low gearing 19:1, gold

Boston   locking machine heads guitar, die cast 6L, low gearing 19:1, black

Boston   locking machine heads guitar die cast 3L3R, low gearing 19:1, chrome

Boston   locking machine heads guitar die cast 3L3R, low gearing 19:1, gold

Boston   locking machine heads guitar die cast 3L3R, low gearing 19:1, black