This product is an Arm. You may need to purchase other components to complete your setup.

Features:

• Double socket swivel arm features 360-degree center rotation with an overall length of 3.69" and a socket-to-socket length of 3.5"
• Attaches to any B 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