Balmar Belt Buddy w/Universal Offset Adjustment Arm UAA2 One Size. To utilize only the adjustment mechanism with an existing adjustment arm purchase part numberBBU.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.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications for Balmar Belt Buddy w/Universal Offset Adjustment Arm UAA2: Manufacturer: Balmar Application: Outdoor Color: Blue Package Contents: Balmar Belt Buddy w/Universal Offset Adjustment Arm UAA2 Balmar UBB2: Belt Buddy w/Universal Offset Adjustment Arm UAA2 One Size