Fits for 4-string electric bass Total string spacing: 18x3=54mm (2-1/8 inch), mounting studs spacing: 98mm (3-55/64 inch), with M8 post and 12mm outer diameter bushing The tailpiece is made of high density zinc alloy, full metal diecast construction, with height adjustable steel post and zinc alloy bushing, solid and durable For top-loading type, hold strings firmly and make your bass stay in tune
