RAM® Pin-Lock™ 4-Pin Security Knob for C Size and Swing Arms Volvo and a 1" NPT post

and a 1" NPT post on the opposite end

three USB-A Ports

both ends of the 30" rod braces the arm rests

6" flex arm and custom high strength composite cradle for the Apple iPod touch 4th generation

RAM® Pin-Lock™ 4-Pin Security Knob for C Size and Swing Arms Volvo and a 1" NPT postThe RAP S KNOB5 4U consists of a 5 16" 18 female threaded security knob and key knob. The RAP S KNOB5 4U replaces all knobs on 1. 5" diameter C size arms and mounts. The RAP S KNOB5 4U offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments. With an emphasis on aesthetics and function, the RAP S KNOB5 4U is low in profile and only adds a small amount of additional bulk