Two Cylinder HD Hand Truck: Two cylinder model capable of handling cylinders up to 12 inch diameter, this unit features 10.5 inch diameter Pneumatic wheels for use in any industrial environment. Features First Safety strap and cinch buckle system to hold the bottles securely in place in transit. Construction is of heavy 11 and 10 gauge HR Steel with 3/16-inch thick steel supports and round steel tube. Fully Welded. Units are powder coated for durability. Ships UPS or truck freight.