Features: 1. Professional Aluminum, Professional Diving High Strength Hard Oxidation Treatment Arm Can Prevent Seawater Corrosion. 2. Strong, , Waterproof Aluminum Construction. 3. Use This Ball Arm Between A Ball Clamp To Stretch The Arm. 4. Unique User-Friendly And Professional Design Greatly Enhances The Use Of The Light Arm Underwater. 5. Extend The Diving Light Arm To Connect Multiple Diving Equipment (Such As Fill Light, Buoyancy Arm, Etc.). Description: 1. Product Material: Aluminum Alloy 2. Applicable Models: Diving Light Arm To Connect Multiple Diving Equipment 3. Product Size: 2.5 x 15cm 4.Color: Black Package Contents: 1 x Diving Stand 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.