Genuine Fender Vintage Right Hand 4-string Bass Tuners for Made in Mexico Basses Set of 4 Chrome right handed vintage style tuning machines, 20:1 Ratio Used on Made in Mexico model basses - Housing Plate Dimensions: 43.59 x 33mm Bushing OD: 17.57mm - Bushings included, mounting screws are not Part Number: 0051806000 Available at Ant Hill Music!