This is a full set including a Bigsby B5 (long spring), a Vibramate mounting plate, and a Callahan string guide and shaft. Depending on the nut adjustment, this setup significantly reduces tuning instability after using the arm. It's a great value, as it would cost over 50,000 yen to buy everything from Soundhouse. Please note that the mounting plate has a protruding section on the left side. All included accessories are shown in the photos. No returns or exchanges accepted.