This is the Ikelite Standard Ball Clamp 1'' [4081.2]
Using the Ikelite Standard Ball Clamp 1'' , you can connect any 2 ball mounts with 1'' diameters, including those from Ikelite, TLC, Ultralight, Nauticam, and others. Thick plates provide strength and ample range of motion and are spring-loaded for easy assembly and breakdown of your arm system. A wing nut allows for easy one-handed operation. The plates and nut are made of aluminium that has been hard anodized to resist corrosion.
Features: Connects Two 1'' Ball Mounts Spring-Loaded for Easy Setup/Breakdown Made of Anodized Aluminium
Specification: Material of Construction Aluminium with type III hard anodized coating ...Contact us if you need more help.