The sturdy design of our 3/4" for specialty fitting roof structures is key to creating a canopy that provides shelter from inclement weather and shade from the hot sun. Cast from galvanized steel, each 102-degree angle fitting is strong, secure and stable. In addition, the eyebolts ensure a tight fit for each pole inserted. Your canopy structure will stay intact in even in hurricane-force winds when you use these slope fittings. Each fitting's inside diameter is 1" and includes welded connections.