Genuine Fender set of four black nickel (sometimes referred to as Cosmo black) GB-1 Gotoh tuners as used on the Mustang Bass. Measures: 0.474″ (12.0mm) Post; 0.589″ (14.9mm) Bushing Outer Diameter; Mounting Hole Spacing across the Top = 0.860″ (21.9mm); 0.895″ (22.7mm) across the Bottom; 1.392 (36.3mm) from Top to Bottom (all center to center). […]