Guyker GB-506 Bass Adjustable 5-String Roller BridgeFeatures This bridge features roller saddles that effectively minimize string breakage while maintaining precise intonation and tuning stability. It offers 3 dimensional adjustment for string height, intonation, and string spacing (with roller saddles). Adjustable string spacing from a narrow 17mm to a wide 19mm and anywhere in between The saddles are equipped with solid, brass rollers, ensuring excellent sound transmission. Each strings intonation