RAM® Double Ball Mount with Metal Knob - C Size Medium 10.85" There are two (2) pivoting

There are two (2) pivoting points on the mount

5 inch diameter ball and socket system with universal round base ends

This mount is designed to be a universal mounting solution for large and heavy electronic devices

5 inch rubber ball on top

The RAM-101U-235Z-BR1 consists of a double socket arm

RAM® Double Ball Mount with Metal Knob - C Size Medium 10.85" There are two (2) pivotingThe RAM 101MU consists of a 6 inch double socket arm with metal knob and two 2. 5" diameter round bases with the universal AMPS hole pattern. Designed into the mount is a 1. 5" diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your device is safe, secure, and within easy