[ Superior Buoyancy and Durability ] Our Buoyancy Floating is engineered to provide high buoyancy, thanks to its high-density, high-hardness, and strong compressive strength properties. It can withstand up to 5 bars of water pressure, maintaining its shape at depths of up to 40 meters without deformation, and maximum depth 50 meter [ Lightweight and Stylish Surface ] The surface of the Buoyancy Float Tube is covered with a heat-shrinkable film featuring carbon fiber patterns, giving it a sleek appearance with an inner diameter of 1 inch. It is compatible with various YS light arms and ball heads on the market, including INON, Sea&Sea, Nauticam, and Ikelite strobe arms [ Convenient and Adjustable Design ] The Buoyancy Floating Tube is designed for easy embly and disembly, allowing you to adjust the neutral buoyancy by stacking the floaters as needed. The silicon rubber non-slip seats on both sides of the float ensure it stays in place, preventing it from sliding due to buoyancy effects [ Durable and Long-Lasting ] Made from premium materials, the Buoyancy Floating is incredibly durable and can withstand the harsh underwater environment, ensuring long-term use and exceptional performance [ Versatile Solution ] The Buoyancy Floater system has four different size options - E555025 (82g buoyancy), E557025 (114g buoyancy), E975025 (298g buoyancy), and E977025 (420g buoyancy) - allowing you to add or remove floats to achieve the perfect amount of buoyancy for your camera system, depending on shooting style and conditions