RAM Quick Release Socket Arm Extension for Wheelchair Armrests RAP-B-419-201-201U-C (sku 59318)Connects to RAM universal quick release wheelchair base with ease Ball and socket technology sets your device at the perfect viewing angle with optional ball extension Supports any RAM phone or tablet holder on a wheelchair armrest The RAM Quick Release Socket Arm Extension consists of a 6" long B size socket arm, a 3. 73" long B size socket arm, a double ball adapter connecting the two arms together, and a post ball adapter that will connect to the