Features: Brand new and high quality Upgraded crab clamp, with the main body made of durable and reliable aluminum alloy. The opening angle has been increased, expanding its range of use. It can be installed on glass, steel, or desks with a minimum thickness of approximately 10mm, and can also be mounted on round, square, or irregularly shaped objects with a diameter of about 50mm. Reinforced meter parts, locked or opened with screw-step control, ensuring greater solidity and stability. Allows for the installation of cameras, flash units, or other devices via a 1/4' adapter screw for more versatile applications. It can be extended to connect accessories like a magic arm and can also serve as a fixed mount for outdoor photography. Specifications: Material: Aluminum Alloy Extended Range: Approx. 1-5 cm / 0.39-1.96 inches Note: 1. Please allow 1-2cm error due to manual measurement; ensure you don't mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x Crab Clamp