The aluminum ball head is made by CNC machining with black anodized finish. The ball head's serrated surface provides a strong grip with the Super Knuckle shell. The ball head can be mounted into a Super Knuckle arm after loosening its central knob. This ball head features an aluminum GoPro mount that allows you to connect your action camera through the Super Knuckle Arm to compatible attachments such as the Wheelchair Tube Clamp, Thick Table Clamp, Super Convi Clamp, and the Magic Suction Cup.