(4) Left handed Hipshot HB7 American Classic tuners for Bass guitar. Gold finish. 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. Includes bushings and mounting hardware. The HB7 is a direct retrofit for Fender Mexican Standard and Highway 1 models with 18mm peghead holes. Made in the USA. Mounting hole spacing is 1" across the top, 25/32" across the bottom, and 1-5/16" top to bottom (on center).