Thanks to the slotted design of Ikelite's Ball Arm Mark II Extensions, their 1" Sliding Ball Mount Mark II can connect directly to the middle of the arm to allow for the addition and movement of a lightweight accessory, such as a focus light. A three-pronged wing nut lets you adjust the mount and slide your accessory up and down the length of the arm to re-position it easily during your dive.
The ball has a groove and an O-ring to prevent slipping for a better hold with less force. Built for durability, the mount is constructed from an aluminum alloy that has been treated with a Type III hard anodized finish to resist corrosion. The Sliding Ball Mount ships without a required Ball Arm Mark II Extension and clamp. A standard ball measuring 1" in diameter, it is compatible with all standard 1" clamps and various components from numerous brands, including Ikelite, Aquatica TLC, Sea & Sea, Inon, Ultralight, and Nauticam.