D'Addario ENR73 Half Round Bass Guitar Strings, Heavy, 55-110, Long Scale 55-110 gauged set with the benefits of an exclusive "Half Round" manufacturing process Brightness and tension similar to standard round wound strings with smoother feel Fits long scale basses with a string scale length of up to 36 1/4 inches Made in the U.S.A. for the highest quality and performance String Gauges: Wound .055, .075, .090, .110