RAM Double Socket Arm - B Size is a medium double socket arm fitting 1in B size ball bases, adapters, and holders. It's adjustable with an easy-to-use knob for near-infinite positioning. The standard RAM® double socket arm has two length options: the medium, with an overall length of 3.73in and a socket-to-socket length of 3in, and the long with an overall length of 6in and a socket-to-socket length of 5.31in. The arm attaches to any B size RAM® ball component and is made of marine-grade, powder-coated aluminum providing durability and reliability in harsh environments. The product has a lifetime warranty with a weight capacity of 2 lbs for standard use and 1 lb for heavy-duty use.