RAM® Ball Adapter with 1" NPT Hole and Tightening Knob - C Size C Size 1.5" (Holds 4 lbs) The base includes black cover

The base includes black cover caps to be placed over the exposed ends of the u-bolt

5" diameter pipe post

long double socket arm and adapter base that inserts directly to the back of Lowrance Elite-4

5" diameter rubber ball connected to a rectangular plate with a 4-hole pattern of 1

The RAM-A-101AU consists of a double socket arm for 9/16" diameter A size balls with a 1/4"-20 threaded post and a diamond base with the 2 hole universal AMPS hole pattern

RAM® Ball Adapter with 1" NPT Hole and Tightening Knob - C Size C Size 1.5" (Holds 4 lbs) The base includes black coverThe RAM 330 DU consists of a 1. 5" diameter C size ball attached to a base that can be clamped to a 1" NPT pipe.