(Set of 4) Hipshot HB7 American Classic tuner for Bass guitar. Nickel finish. Right handed. The finest quality materials and precision engineering have been combined to make American Classics the best bass tuning machine you can buy. 27:1 ratio with adjustable tension. The HB7 is a direct retrofit for Fender® Mexican Standard and Highway 1 models with 18mm peghead holes. Also fits some Squier Standard Series models. Mounting hole spacing is 1" across the top, 25/32" across the bottom, and 1-5/16" top to bottom (on center). Includes bushing and mounting hardware. Made in the USA.