- D-tuner for electric bass - bass side (righthand version) - open geared - replacement for Hipshot HB6 Ultralite and Licensed Ultralite tuning machines - can be upgraded to include a Double Stop lever - Y-shape key - diameter of string post 12.7 mm (1/2”) - headstock hole 17.5 mm (11/16”) - incl. mounting hardware - chrome - made in USA