The RAP-409U consists of a 1.5" diameter rubber ball with an integrated hex post and ability to connect using a machine screw and nylock nut. This reduces the footprint of the mount and enables the mount to connect to a large variety of RAM Mount and third party cradles where space is limited.

Material:
High Strength Composite 

Ball Size
1.5" Rubber Ball "C" Size 

Note:
The "U" in the part number reflects product packaged in poly bag.