The RAM-B-348U includes a 1/4"-20 female thread connected to a 1" rubber ball.
Material:
Powder Coated Marine Grade Aluminum
Ball Size:
1" Rubber Ball "B" Size
Note:
The "U" in the part number reflects product packaged in poly bag.
B size 1" (Holds up to 2 lbs)
Powder Coated Marine Grade Aluminum
Adapter
Packaged in Poly Bag