Check the listing for details. RAP-B-378U RAM Flex Adhesive Ball Base.... Color: Black, Condition: New. Listed at 26.94 USD. RAM Flex Adhesive Ball Base... RAP-B-378U Genuine RAM Products! The RAP-B-378U consists of a 2.5 INCHES composite B size ball base, double-sided adhesive PSA stick pad, and sealed alcohol prep pad. This base will attach to all RAM B size double socket arms, allowing you to connect a compatible device holder.hardware included (1) 2.5 INCHES Double Adhesive Pad(1) Alcohol Prep Padplate size 2.5 INCHES Diameterball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials High strength compositepackaging type Poly BagWeight 0.1 lb FEATURES Flex adhesive ball base provides a strong mounting surface in a wide variety of use cases, such as a vehicle dash Included B size 1 INCHES RAM rubber ball allows for connection to any B size RAM double socket arm; ball and socket technology allows for near-infinite adjustability Made of high-strength composites for durability and reliability in the most demanding environments Backed by a lifetime warranty hardware included (1) 2.5 INCHES Double Adhesive Pad(1) Alcohol Prep Pad plate size 2.5 INCHES Diameter ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials High strength composite packaging type Poly Bag Weight 0.1 lb