The Cynder Dual Propane Bottle Rack System is designed to hold two (2) 20 pounds propane tanks securely in place while traveling with your RV, camper or trailer. Fast and easy to use, just place propane tank(s) on to the rack and tighten down the tee bracket to the top of the tanks with the wing nut, It's that simple. Made from a durable powder coated steel. Propane tank(s) sold separately. Comes complete with: Tank Base, Steel Rod, Tee Bracket and Wing Nut. Holds two (2) 20 pounds propane tanks.