Introduced on the American Ultra II bass guitars, the precision manufactured HiMass bridge allows string-through or top-load operation for greater versatility with endless sustain, precise attack and rock-solid tuning stability. The brass baseplate and machined saddles impart warm, authentic vintage-style tone with .775" string spacing for a familiar playing feel. Precision engineered as a direct drop-in replacement for modern-style Fender models; this bridge mounts via three screws. Mounting hardware included. Fits: American Professional I & II, American Deluxe and American Elite Basses.