This is standard five string bass bridge, comes with mounting screws and hex wrench . This silver five string bass bridge is great upgrade for your current bass . Fits for 5 string electric bass guitar . The string height and length are adjustable . There are 5 fixing screw holes . Top 6 holes and down 5 holdes spacing is about 17mm . Bridge Size(L x W): Approx. 94 x 53mm . String Spacing: Approx. 16.5mm . Material: Steel and zinc alloy . Color: Black . Package Includes: 1 x Five string bass bridge 6 x Screws 1 x Hex wrench