RAM® Aluminum Track Ball Base with T-Bolt Attachment - C Size Car & Truck>Dashboard The RAM-247U-5 is a clamp

The RAM-247U-5 is a clamp base with 1

5" diameter round base with 1

5" diameter ball component parts

socket and ratcheting feature

There are two (2) pivoting points on the mount: one at the swing arm and base and one at the center of the round base

RAM® Aluminum Track Ball Base with T-Bolt Attachment - C Size Car & Truck>Dashboard The RAM-247U-5 is a clampThe RAM Track Ball is made up of a C size 1. 5" ball molded to a marine grade aluminum base, a rubber friction washer and a stainless steel T bolt for sliding into virtually any track system. Simply insert or slide the Track Ball into your track and twist the ball clockwise to tighten in place. Twist counterclockwise to loosen or adjust the ball.