Saga JB-12 Jazz Bass-Style Fretless Bass Kit All-solid basswood body (pre-sealed) Solid maple neck with fretless rosewood fingerboard, blank peghead shape and tuning machine holes pre-drilled; Adjustable truss rod Control plate assembly is prewired with 1 tone and 2 volume controls, and input jack; Heavily chrome-plated hardware 14:1 ratio geared machines with vintage-style buttons; Traditional designed bridge for 4-strings Complete with strings, amplifier cord, and easy to read assembly and finishing instructions