RAM® Double Socket Arm - B Size Long RAM-B-138-GA76U 5” rubber ball and accommodates

5” rubber ball and accommodates bars 1 1/8” to 1 1/2” in diameter

The RAM-B-231Z-2-366U consists of a steel strap base

The RAM-B-174-GA34U consists of a double socket arm

5" diameter round plate with universal AMPS hole pattern with a removeable 1/4"-20 threaded post on one side and a strap clamp base for rails from 1" to 2

RAM® Double Socket Arm - B Size Long RAM-B-138-GA76U 5” rubber ball and accommodatesThe RAM B 201U C consists of a long double socket arm that accommodates 1" B size ball bases, device holders, and adapters. With an overall length 6", this is the longest B size RAM double socket arm size and adds more reach to your favorite mounting solution. The easy to adjust knob allows for near infinite adjustability for your connected device.