RAM® Double Ball Mount with Two 3/8"-16 Threaded Studs 4K Plus with Case Designed into the mount is

Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at the base and cradle

5" C size ball and 4-hole pattern

The RAM-B-121U-A-238 consists of a yoke clamp base

The RAM-109-1AP is a bent 6" long Arm Extension for the RAM 109 series

Loosen the knob on the double socket arm to achieve near-infinite viewing angles

RAM® Double Ball Mount with Two 3/8"-16 Threaded Studs 4K Plus with Case Designed into the mount isThe RAM B 103 236U A consists of a short double socket arm and two 1" ball bases with a 3 8" 16 threaded post. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm; this with a twist of the arm knob allows for you to maneuver the mount to your optimum viewing position.