This is the Ikelite Steady Tray Mount with 1'' Ball [4081.74]
Mounts directly to either side of the Steady Tray for GoPro for attachment to 1 in diameter ball arms from Ikelite, TLC, Ultralight, Nauticam and others. Requires a compatible 1-inch Ball Clamp, sold separately. Hard coat anodized aluminum for a long lasting, scratch resistant finish.
Features: Mount for Optional Lights/Handles Ball Mount with 1", Diameter Made of Anodized Aluminum Groove and O-Ring for Better Hold
Specification: Material of Construction Type III anodized aluminum, stainless steel, nylon Dimensions 1", / 25.4 mm diameter ball Weight 1.6 oz / 45 g
Includes: Ball mount with o-ring Hardware ...Contact us if you need more help.