Hipshot "A" series chrome finish brass 4-string bass bridge. The A series bridges are solidly built from brass for the best tone transfer and are highly adjustable to dial in the perfect setup. Features fine side-to-side string spacing adjustment in each saddle. Strings through body or quick change top load with .750"(19mm) string to string spacing(2-1/4"(57mm) outer string spacing). Made in the USA.