This fitting slides over the 2.0" rafter tubing on a 40' wide traditional frame tent to allow for connection of diagonal braces back to the eave (Special Tee) of the tent. It is designed for use on traditional/west coast style frame tent systems that utilize 2.0" round aluminum tubing with a 0.125" wall thickness. The fitting is welded from precision cut 1.25" Schedule 40 steel pipe and then powder coated with a grey gloss coating. The dimensions of the 1.25" SCH 40 pipe are 1.660" OD and 1.380" ID.