Harper Nylon Convertible Hand Truck - 37-1/4"Lx12"W Platform - Amazon.com
Harper Trucks JEDT8635P 700 lb Capacity Super-Steel Convertible Hand Truck, Dual Purpose 2 Wheel Dolly and 4 Wheel Cart with 10" Flat-Free Solid Rubber Wheels - Hand Trucks - Amazon.com
Airgas - HRP740-27 - Harper™ Series 700 Single Cylinder Hand Truck With 14" X 1 3/4" Semi-Pneumatic Wheels, Continuous Handle And 7" X 14" Base Plate (For Medium To Large Cylinders)