RotoSound RB40 40-100 Long Scale Standard Guage Bass Strings. The sound, balance, feel and tone remains uppermost in Rotosound’s commitment to offer the musician the very best in value for money. These strings are manufactured on state of the art computer controlled string winding machines that have been developed by Rotosound engineers to bring you a consistently great product time and time again. Value in a Bass Set! In stock now! • MFSKU RB40 • UPC 686194000431