The BadAss II is a precise, harmonically tunable direct-replacement bridge for Fender Jazz and Precision Basses. The massive structure of high density alloy Zinc will produce sound-coupling effects creating tremendous increases in "ATTACK," sustain, and clarity of notes. Absolutely no modification is required. It will install directly onto Fender basses with the five screws of the original bridge. The design of the Bass II eliminates the problems of harmonic tuning, interference of bass string silk wrappings, contacting the bridge saddle, and undesirable side movement of the strings and bridge saddles.