Features 1、Coming with screws of 1/4 and 3/8. 2、Help lighting engineers or photographers fix their accessories more easily. 3、Large grip size is up to 5.5cm. 4、Be able to fix onto any tubes coming with size from 2-5.5cm. 5、Be able to fix onto any shaped body, such as water pipes, handrails, doors, shelves, tables, branches, wires, etc. Specification Features: Coming with screws of 1/4 and 3/8. Help lighting engineers or photographers fix their accessories more easily. Large grip size is up to 5.5cm. Be able to fix onto any tubes coming with size from 2-5.5cm. Be able to fix onto any shaped body, such as water pipes, handrails, doors, shelves, tables, branches, wires, etc. Specifications: Usage: Can clamp types of tubes, and coming with 1/4, 3/8 Screws; can match Magic Arms, LED and other lighting, video accessories Large grip size: Up to 5.5cm / 2.2in Thickness: 2cm / 0.8in Rotating length: 6.5cm / 2.6in Item weight: 130g / 4.6oz Package size: 8.8 * 6.8 * 1.8cm / 3.5 * 2.7 * 0.7in Package weight: 136g / 4.8oz Package list: 1 * Clamp Package List 1 * Clamp