RAM Mount Long Double Socket Arm w/2.5" Round Base [RAM-B-103U-C] Marine Plumbing & Ventilation The included back plate is

The included back plate is interchangeable with various size support cups

For obtaining water at dockside

Compatible with a wide range of mounting solutions

but the 5206-N has a nylon ferrule

Bucket Seat

RAM Mount Long Double Socket Arm w/2.5" Round Base [RAM-B-103U-C] Marine Plumbing & Ventilation The included back plate isRAM 1" Diameter Ball Long Double Socket Arm with 2. 5" Round Base that contains the AMPs Hole Pattern Overall Length: 6. 62" The RAM B 103U C consists of a 2. 5" round base and LONG double socket arm that will accept 1" ball bases. The round base contains pre drilled holes, including the universal AMPS hole pattern. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm;