GOTOH H.A.P. machine heads. The string tension from the nut can be adjusted by changing the height of the shafts. They were installed on a Stratocaster, but were removed and stored when the instrument itself was sold. - Brand: GOTOH - H.A.P. (Height Adjustable Post) - Finish: Nickel - Gear Ratio: 1:15 - Button Size: 05M Reference Price: 8080 yen