Jerry Stage-C9 Aluminum O-Clamp for 2" Truss Tube Capacity 165 lbs. Aluminum truss clamps are commonly used in the entertainment industry for hanging lighting fixtures and other equipment from truss systems. Topfinger clamps are made from high-strength AI 6061-T6 aluminum alloy to ensure they are lightweight yet durable. This O-clamp is designed specifically for use with most truss systems. It is made from high-strength aluminum alloy and features durable, yet lightweight construction. The O-clamp design allows for quick and easy mounting onto the truss, and it can be securely fastened in place using a bolt and wing nut. The clamp‘s wide surface area helps to distribute weight evenly, reducing the risk of damage to the truss or equipment while being hung. Jerry Stage-C9 Aluminum Slim O-Clamp for 2" Truss Tube Features: Includes Big Wing Knob for EZ Hand Tightening . O-Style Clamp For 2" OD Piping. Material: AI 6061-T6 Aluminum. Min. Tubing Diameter: 1.8" (46mm). Max. Tubing Diameter: 2.008" (52mm). Max Load Capacity: 165 lbs (75 kg). TUV Approved Certification.