【TUV Certified Pro Truss Clamps】Rualin Pro swivel truss clamps made of premium aluminum alloy 6061 material, completely wrap around truss, safer and more durable. | 【Heavy Duty Swivel Clamp】This heavy duty swivel clamp is designed for the large weight loads to hold safely and securely, max load capacity: 1100lb / 500kg. | 【Secure & Reliable】Constructed with standard course 1/2 inch swing bolt for a strong and secure connection. Swivel coupler with dual heads, turn as needed 360̊ rotation, quick and easy to install and remove. | 【Fit Tube Sizes】It’s also a Pro swivel clamp with threaded bolt 10mm, fit truss or pipe sizes 48-52mm, compatible with F31, F32, F33, F34, and F44P Truss pipes. | 【Package & Warranty】2 Pack pro swivel truss clamps in packing with 3 year warranty. Widely use for array of truss, security for hanging LED Par light, Moving head beam Spot and other stage lighting fixtures.