The RAM-334U consists of a double socket arm, 3.625" square plate with a 75mm X 75mm VESA hole pattern and stainless steel double u-bolt base that will fit pipes from .75" to 1.25" in diameter. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles.

Material:  
Powder Coated Marine Grade Aluminum 

U-Bolt Dimensions:
Accommodates rails from 1" to 1.25" in diameter. 

Ball Size:
1.5" Rubber Ball Size 

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