Premium Material with Solid Pin: Our Pro swivel truss clamps made of premium aluminum alloy 6061 material with solid pin, 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: 770lb / 350kg. | 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 OD 2” (48-52mm), compatible with F31, F32, F33, F34, and F44P Truss pipes. | Package & Warranty: 2PCS Pro swivel truss clamps in packing with lifetime warranty. Widely use for array of truss, security for hanging LED Par light, Moving head beam Spot and other stage lighting fixtures.