Features: Heavy duty machined aluminum alloy crabs clamp with 13-48mm opening and 1/4" 20 threaded hole securely mounts cameras/lights to pipes, railings, or tables (3kg payload capacity). Features double materials construction (aircraft grade aluminum + iron) with precisions engraving for enhanced grip strength and durability in professional photography environments. Ideal for content creators, vloggers, and studio photographers needing versatile mounting solution for DSLRs, rings lights, or smartphone rigs during mobile shoots. Perfect for outdoor filming, tabletop product photography, or studio lighting setups where temporary secure attachment to irregular surfaces is required. portable 76g design enables effortless integration into camera bags while maintaining professional clamping performances for tripod accessories and stabilizer systems. Specifications: Materials: Aluminum alloy + iron Black clip size: 5x2cm Interfaces: 1/4inch internal screw hole Package Includes: 1PC 1/4inch Thread crabs Clamp note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.