ITEM NAME:1" Dual Ball Head Light Arm System Joint for Underwater Video Photography 10'' Description: 60mm Underwater Buoyancy Light 1inch Ball Arm Joint . Offer a great buoyancy capable for ultralight, aquatic arm and underwater camera system. The ball is pressed and bonded in the air to keep the arms floating. Practical accessory for wide-angle and macro photography. Made of high quality carbon fiber aluminum, light weight and durable. Specification: Material: Carbon Fiber & Aluminum Diameter: 60mm/2.4inch Length: 254mm/10inch Package Includes: 1 Piece Floating Light Arm Note: Please allow a slightly errors due to manual measurement. Due to the difference between different monitors,the picture may not reflect the actual color of the item. Thanks for your understanding and attention, wish you a pleasant shopping experience!.Practical accessory for wide-angle and macro photography. The ball is pressed and bonded in the air to keep the arms floating. 1 Piece Floating Light Arm. Made of high quality carbon fiber aluminum, light weight and durable.