DR Handmade Strings FNI-40120 5 Electric Bass Strings Ultra Light - 40-120Fodera xDR Strings combine Foderas unique specs with the renowned manufacturing expertise of DR Strings. Fodera x DR Strings are handmade using the finest materials available featuring a round high carbon steel core with compression winding for balanced tension and optimal response. We are proud to offer these exceptional strings for you to enjoy! Specifications Gauge: Ultra Light # Of Strings: 5 String Core Wire: Round Wrap Wire: Nickel Plated Steel