RamMount RAM DBL SOCKET ARM C BALL B LENGTH RAM Double Socket Arm - C Size Short The RAM-201U-B consists of a short double socket arm that accommodates 1.5 C size ball bases, device holders, and adapters. With an overall length 3.56, this is the shortest RAM double socket arm size.The easy to adjust knob allows for near-infinite adjustability for your connected device. Specifications Low-profile design with an overall length of 3.56 and a socket-to-socket length of 2.5 Attaches to any C size RAM ball component, including mounting bases and device holders; double ball and socket technology allows for near-infinite adjustability of your RAM mounting system Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments Backed by a lifetime warranty.