The Hipshot A Style Bass Bridge is a premium quality 5 string bridge for new builds or retrofitting your Fender bass (using the four mounting holes). The bridge is machined from a solid block of aluminium for superior quality and tone, and the saddles are nested into channels to remove sideways motion. The string spacing is 18 mm as standard but each string is adjustable in the saddle to give 2 mm (0.08") side to side adjustment for better string, pickup and neck alignment. The Hipshot A Style Bass bridges give you the choice of either top loading the strings through back of the bridge or mounting them through the guitar body for the tone you prefer.