Features:
100% Brand new and high quality!
Compact, strong and versatile
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 1-5.5cm
Be able to fix onto any shaped body, such as water pipes, handrails, doors, shelves, tables, branches, wires, etc.
Can clamp types of tubes, and coming with 1/4, 3/8 Screws
Can match Magic Arms, LED and other lighting, video accessories
Supports the largest diameter is 55mm. 
Supports the smallest diameter is 10mm. 

Specifications:
Condition: new
Material: Aluminum Alloy
Color: black
Opening and Closing Length: Maximum: 55mm
Minimum:10mm
Thickness: 20mm
Weight: 137g