1.DURABLE MATERIAL: The Underwater diving light arm clamp features a high quality hard anodized anti-abrasion finish, is made of aluminum alloy, and is easy to handle and durable; the Aluminum spring flashlight clamp features thickened plates to provide the perfect combination of strength and range of motion; the plates are spring loaded for easy assembly and disassembly of your jib system. The plates are spring loaded for easy assembly and disassembly of your boom system. 2.VERSATILE DESIGN:Attach your underwater camera with 1' ball clamp mount for buoyancy; 360° clip adapter bracket holder can be rotated 360° for multi-position attachment and fixation, use 2 ball clamps to attach 2 ball adapters or underwater extension arm to fix 2 accessories to the camera. The Underwater diving light arm clamp is versatile, practical and powerful, allowing you to adjust the flash direction more ly. 3.WIDE RANGE OF USES: The dual holes ball clamp is widely used in dive assembly kits, divers can ly use this clamp to match their own dive sets; divers can easily adjust the angle and direction of the dive sets. The dual holes ball clamp mount is compatible with Gopro, CamDive, Meikon, Ikelite, TLC, Ultralight, Nauticam and other brands of jibs, which is the choice for photographers. 4.GE: The ball clamp is widely used in dive camera assembly kits, the standard ball clamp is suitable for a variety of underwater lighting system; 1' ball head adapter connects the 1'' ball to the underwater extension arm; during normal shooting and underwater photography, the TLC ball clamp is the choice for photography enthusiasts. In normal and underwater photography, Dual ball clamp can connect the underwater extension arm, ball head or fill light, diving flashlight, base adapter, float or action camera perfectly.