Made of Lightweight Aluminum Alloy material: Corrosion-resistant aluminum alloy (hard anodized body) meet the highly accurate and durable requirements. Function: Perfectly connect with the ball head to plug in the fill light, diving flashlight arm or for action camera etc. when normal and underwater photography. Features: Made by Aluminum alloy, lightweight, durable and anti-corrosion, can rotate 360, degrees, multi-position free connection and fixation, have more freedom to adjust the flash direction. Usage: The ball clamp is used to attach 2 arms, base adapters and strobes , the clamp mount for 1 inch ball arms for Hero 5 6 4 3 4k action camera accessory and others. Ergonomic : Ergonomic spinning handle , naturally suitable for and made of resin to enhance operability, with lower power consumption, easy to loose, adjust the relative,can connect multiple diving devices. Have a higher degree of freedom to adjust the flash direction. The Standard Clamp attaches two 1-inch diameter balls. Thicker plates the perfect combination of strength and range of motion. Plates are spring-loaded for easy assembly and breakdown of your arm system. A hard anodized aluminum wing nut allows for easy one-handed operation and will withstand years of use. 1. Self Powerful Combination,CNC Aluminum,Feel Good,Hand- Self-Timer or Connect A Fixed Rotation, Versatile, Practical, Powerful. 2. Diving Lights Ball Clip Mount Ball Adapter. Specifications: Material: CNC aluminum alloy Color: Black Size: 6.2x5.5x2.5cm / 2.5*2.17*0.98 inch Weight: 2.12 Compatible Action Camera Brand: 4k, for , , , , , , , Camera Package Contents: 1 * Ball Clamp Mount Clip Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.