The RAM-B-121-238U consists of a yoke clamp base, standard length double socket arm and diamond base

The yoke clamp base will fit rails in diameter from 13mm / 0.625" to a maximum of 31mm / 1.25". The 1" (B Series) rubber ball is at a right angle to the plane of the mount; when connected to a rail, the ball sits parallel to the rail. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm, allowing for almost infinite adjustment and perfect viewing angles.

RAM-B-238U Diamond Plate 61.7mm x 33.3mm (2.43" x 1.31") with B Size 1" Ball

This base has two holes and is perfect for permanent mounting on boats, cars, trucks, planes etc

The RAM-B-238U consists of a 1" diameter rubber ball connected to a 61.7mm x 33.3mm diamond base. The base has two holes 48.5mm from centre to centre, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.

Specifications/Features

Clamp Base Dimensions:

Accommodates rails from 16 to 31mm in diameter

Material:

High Strength Composite and Powder Coated Marine Grade Aluminium

Ball Size:

1" Rubber "B" Ball Size

Component Parts:

RAM-B-121BAU - Yoke Clamp RAM-B-201U - Double socket arm (94 mm overall length) RAM-B-238U - Diamond base with 1" ball

Youtube: Yoke Clamp: https://www.youtube.com/watch?v=er8ITDWr5D8