XCSOURCE Adjustable Neck+ Jaws Flex Clamp Mount for Gopro Hero 2 3 3+ 4 Accessories OS251 Specifications: Clamp opens to 1.2 wide for easy installation Able to clip to most light stands,pipes or board. Fit for Gopro Hero 1/2/3/3+/4 HD camera (also fit for compact cameras with tripod socket) Weight: approx 485g