Schaller 3D-6 Bridge Black Schaller 3D-6 Bridge string spacing e1-E6: 50.0 - 56.5mm individual string spacing: 10.0m-11.3m.Radius: fits 7 "-20" fingerboards.Colour: Black Incl. 3 mounting screws, 1 hexagon key , 3mm base plate with screws.Flatmound bridge with adjustable string height,intonation and string spacing.The roller saddles can be fixed laterally with a screw .Solid construction for improved sustain.