Schaller SCH12120200 6 Strings Guitar Bridge (Chrome)Flatmount bridge with adjustable height, intonation and string spacing (roller bridge saddles). The roller bridge saddles reliably minimize string breakage while maintaining intonation and tuning stability. Specifications Adjustable in height, intonation and string spacing. Heavy and precise construction for extra long sustain. Variable overall height with 3mm spacer. You can use the screw on the treble side to fix the string saddles in place so that