Made of aluminum alloy material,lightweight and durable. The clamp can add flashlight at single arm position, then it can have a greater degree of freedom to adjust the flash address. Multi directional rotating fixed connection, practical and strong. Suitable for diving flashlight. Handle designed, naturally suitable for fingers and made of resin to enhance its operability, with lower power consumption,easy to loose, adjust the relative angle of the joint arms firmly clamp the ball joints. Professional diving equipment accessories for diving lovers. Specification: Material: Aluminum Alloy 25mm: Inner Diameter: 25mm/0.98inch;Total Length:88mm/3.5inch;Suitable for inner diameter 20-25mm flashlight type 35mm: Inner Diameter: 35mm/1.4inch ;Total Length:98mm/3.9inch;Suitable for inner diameter 30-35mm flashlight type Color:Red,Black(optional) Package Includes: 1 Piece Ball Joint Bracket Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!