Product: O-CLAMP 

360 degree wrap around tube truss clamp- securely mounts fixtures to truss * Non scuffing - Non scratching - Non scoring - Non denting, great for the LTS-1, LTS-2, and the LTS-30 * Comes in 3 sizes: 1 in., 1.5 in, & 2 in. can be obtained by removing adapters from the 1" or 1.5" O-Clamps