These four 3-way fittings are heavy-duty galvanized steel fittings with welded connections and tightening eyebolts These fittings have an inner diameter of 1 3/8” They work with 1 3/8” EMT pipe or chain-link fencing top rail that has an outer diameter of 1 5/16” More canopy fittings are available at the Jones-Sports Amazon Store Returns may be subject to a 20% restocking fee Galvanized 3-way 120-degree peak 1 3/8" canopy fittings with welded connections and tightening eyebolts. These fit EMT pipe or chain-link fencing top rail. These fittings are perfect for high-peak canopies of all sorts. Get all your canopy fitting needs and more at the Jones-Sports Amazon Store. Returns may be subject to a 20% restocking fee.