Four Wheel Two Cylinder Hand Truck 12" Max Dia.: Two cylinder model capable of handling cylinders up to 10 inch diameter, this unit features 10.5 inch diameter Pneumatic wheels and 3 inch fold-away rear casters 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 gauge HR Steel with 3/16-inch thick steel supports and round steel tube. Fully Welded. Units are powder coated for durability. Ships UPS oversized or truck freight