RAM® Horizontal 6" Swing Arm Mount with Swivel Socket Arm RAM-103-D-2461 The tray includes four FLAT

The tray includes four FLAT (4) side clamping arm

This kit comes with a 6" x 6" base with an industry-standard amps hole pattern

Each plate includes a hole pattern that matches the standard AMPS four hole pattern and a three hole 120 degree hole pattern

The ball socket with female 1/2" NPT hole are made from lightweight marine grade aluminum

The RAM-101-2461-225B2U consists of a double socket arm with one 2

RAM® Horizontal 6" Swing Arm Mount with Swivel Socket Arm RAM-103-D-2461 The tray includes four FLATThe RAM 109HS 4U consists of a 6" swing arm with a 3. 47" x 3. 47" square base for horizontle surfacse and a socket for a C size ball.