Balmar Belt Buddy w/Universal Adjustment Arm One Size. Caution: This approach sacrifices some travel in the existing adjustment arm so the BBU mechanism can be anchored to the arm. Make certain your alternator mounting does not need this travel before purchasing the BBU. Specifications for Balmar Belt Buddy w/Universal Adjustment Arm: Manufacturer: Balmar Color: Black Package Contents: Balmar Belt Buddy w/Universal Adjustment Arm Balmar UBB: Belt Buddy w/Universal Adjustment Arm One Size