Features: Aluminum clamp with 1/4inch-20 & 3/8inch-16 threaded hole for secure mounting of lighting equipment and photography gear. Adjustable clamping (1.5-5.4cm) features oversized ergonomic handles for effortless grip on pipe, railings. Essential tool for photographers, videographers, and studio professionals requiring stable accessory placement in dynamic environment. Perfect for mounting reflectors, microphones, or cables to poles, door, tables, or outdoor structures during studio setups Comfortable grip mechanism accommodates round/square tubes and textured surfaces, making it ideal for photography studios, event stage. Specifications: Component:Aluminum Size:Approx.54mm/2.12inch Package Includes: 1 Set Crabbing Clamp note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.