Brass Bass Bridge For Fender Jazz Or Precision Bass - Perfect Fit - Vintage Mount Brass, not Cast Zinc as other High Mass Bridges are Professional quality, plated Brass, direct replacement for a traditional 5 hole, 4 string Fender bass bridges. Oversized Nickel Plated Brass Saddles With Variable String Spacing Direct replacement for a traditional 5 hole, 4 string Fender bass bridges. It will mount without any modification to the bass. Machined 4 string Brass bass bridge is computer designed