The RAM-B-235U consists of a double u-bolt base with 1" diameter ball and two stainless steel u-bolts. The double u-bolt base will accommodate rails from 0.75" to 1.25" in diameter.

U-Bolt Dimensions:
0.75" to 1.25"

Material:
Powder Coated Marine Grade Aluminum

Ball Size:
1" Rubber Ball "B" Size