RAM® Double Socket Arm with Round Plate - B Size Short RAM-B-121-TAB12U 5" diameter round base with

5" diameter round base with 1

The RAM-111-247-2U with clamp base

a C size short length socket arm and a C size RAM® Diamond Ball base for flat surface drill-down mounting such as a rear bumper

The kit includes hardware to attach the C size 1

RAM® Double Socket Arm with Round Plate - B Size Short RAM-B-121-TAB12U 5" diameter round base withThe RAM B 103U A consists of a 2. 5" round base and SHORT 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; this with a twist of the arm knob allows for you to maneuver the mount to your optimum viewing position.