- Rugged and Durable Construction: Crafted from high-quality aluminum alloy, this underwater extension mount arm is waterproof, rustproof, and corrosion-resistant, making it ideal for harsh underwater environments. The carbon fiber ball to YS arm enhances buoyancy, providing stability to your lighting setup and ensuring precise light placement for improved photo and video quality. - Multipurpose Use: Perfect for diving, snorkeling, and outdoor photography, this extension arm optimizes the positioning of your video lights, strobes, or dive camera trays. It is designed for versatility and durability, making it a reliable tool for underwater photographers, dive professionals, enthusiasts, snorkelers, and spearfishermen. - Versatile Performance: The 5.5-inch underwater extension arm allows for better stability and the flexibility to adjust light angles for capturing stunning underwater images and videos. It is an essential accessory for achieving the best possible results in underwater photography. - Easy Installation and Compatibility: Featuring a lightweight 1-inch ball to YS head adapter design, installation is straightforward. This arm is compatible with all 1-inch ball hole clips and can easily connect to other dive accessories. Multiple connection points provide the customization needed to tailor your setup to specific shooting requirements. Use scenarios include: 1. Positioning video lights for capturing vibrant coral reefs while snorkeling. 2. Enhancing lighting for professional-grade underwater photography during scuba diving expeditions. 3. Supporting dive camera trays for spearfishing trips to ensure optimal light placement. This extension mount arm is a practical and essential tool for anyone serious about underwater photography.