Rain or shine, the 3/4" three-way thru fitting from Canopies and Tarps can withstand any curveballs Mother Nature throws your way. With your purchase comes top-of-the-line steel material, galvanized to prevent rust and to extend the life of your structures. Specially made for fitting roof structures, your poles will stay locked into place with the accompanying eyebolts that come with your shipment. The fittings have been crafted to be used in conjunction with EMT conduit. With a fitting inside diameter of 1", you can expect an easy set-up at an affordable price.