Corners fitting for 1 inch EMT Internal diameter of the fittings is 1 3/8'’ Fit all poles which have an outer diameter less than 1 3/8'’ Fitting with welded connections and tightening eyebolts 90 Degree angle. Great for Clothes racks or bottom of canopy set ups Corners kit for 1 inch emts. Purchase separate 1 in emts locally. Internal diameter of kits are 1 3/8'’, the kit requires pipes with outer diameter of 1 3/8'’or less.