2 Packs 8 Inch Double Ball Aluminium Alloy Extension Arm, 1 Head Connection Underwater CNC Arm System for Strobe/Video Light/Diving Camera Tray

Specification: Length: 8 inches / 20.3 cm. Ball size: 1"/25mm. Weight: 5.57oz/158g 2 x 8 inch double 1 inch ball extension arm; 2 x free replacement O-rings High Quality Material:Made of corrosion resistant anodized CNC aluminum alloy, anti corrosion. The hollow design makes it lighter and reduces resistance when used underwater Ball head with protective ring: 1 inch ball head made of corrosion-resistant anodised aluminium alloy with silicone O-ring friction seals, avoid friction during connection and make the connection more stable Free extension: 8 inch double 1 inch ball arm supports the connection of strobe or video light, adjust the angle freely to get the best light angles to take the best photo you want Connector: double ball adapter connect your underwater strobe or video light via the light holder; The size is universal and compatible for all arm systems that have a ball head with a diameter of 25 mm/1 inch