Made of Aluminum Alloy material: - aluminum alloy (hard anodized body) meet the highly accurate and requirements. Function: Perfectly connect with the ball to plug in the fill light, diving flashlight arm or for action camera etc. when normal and underwater photography. Features: Made by Aluminum alloy, , and anti-, 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 together, the clamp mount for 1 inch ball arms for Hero 5 6 4 3 for 4k action camera accessory and others. Ergonomic Design: Ergonomic handle design, naturally suitable for fingers and made of resin to enhance its 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 provide 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 withstand years of use. Compatible Action Camera :for 4k, for , for , for , for , for , for , for , Camera Colour:Black Material:aluminum alloy Package Contents: 1 * Ball Butterfly Clip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.