Nickel Lo-Rider bass strings are specifically designed for a softer feel and a traditional warm nickel sound. These bass strings are even, long lasting and loud with a midrange growl. An excellent string for fretless basses. ''Lo-Riders Love to FUNK.''. Material: Nickel-Plated Steel. Hexagonal Core Wire with Ball End. Gauges: 45 ,65, 85, 105, 130.