Our Bass 37 series strings taper at 37.25 inches to fit most long scale basses. Nickel NPS8 feels soft and produces a warm tone, while our Cryogenic -320 are stiffer and brighter and ideal for slap bass. Also available in Black Coated and Cryogenic -320. Bass guitars come in many scale lengths. We measure "speaking length" which is the measurement between where the string ball sits at the bridge measured up to the nut. Fits speaking length 34”-36”