Set of 6 quality sealed gold machine heads(3L+3R), fit 10mm(0.39inch) standard machine head hole.
Heavy duty internal gear tested, easy to install, compatible with steel string electric guitar or acoustic guitar.
Gear ratio: 1:14; Zinc alloy material with gold plating;Location: 3L 3R; Head size is 22mm width. For specific dimensions, please look at the size diagram.