Description:Length 45/52mm Electric Guitar Headstock String Retainer Bar Tension Bar for Tremolo SystemsReduce string friction to save the stringsComes with 2 mounting screwsMaterial: IronColor: Black and GoldenPackage Includes:1 Piece Guitar String Retainer Bar2 Pieces ScrewsNote:Color might be sightly different due to the color calibration of each individual monitorPlease allow slightly measuring deviation due to manual measurement