The RAM-201U-D consists of a long double socket arm that accommodates 1.
The RAM-201U-D consists of a long double socket arm that accommodates 1.5" C size ball bases, device holders, and adapters. With an overall length of 9.125", this is the longest C size RAM® double socket arm size and adds more reach to your favourite mounting solution. The easy to adjust knob allows for near-infinite adjustability.