The RAM-220U is a half rail clamp base with 1.5" rubber ball that will connect to rails from 1" to 1.25" in diameter.
Powder Coated Marine Grade Aluminum
1.5" Rubber Ball Size
The "U" in the part number reflects product packaged in poly bag.
|Ball and socket size||Product Type||Material||Mount function||Packaging|
|C size 1.5" (Holds up to 4 lbs)||Base||Powder Coated Marine Grade Aluminum||Handlebar/Rail||Packaged in Poly Bag|