The TC-Barco Projector Clamp will fasten from 2″ OD to 1.5″ OD Tube. Has a 2-1/2″ T-Handle so no tools are required to fasten to the pipe. Over 2″ of adjustment is possible with the half turnbuckle design. .390″ hole for shackle mounting to projector. Safe Vertical Working Load 450 pounds (200KG). Weight is 1.5 pounds.