Make deliveries a breeze with this commercial-grade Stair Climber Hand Truck. It can be used as a regular dolly or as a stair climber, making it ideal for a number of different transporting jobs. This aluminum hand truck has a 330 lb capacity when used as a stair climber and 550 lbs when used on flat level surfaces. Each side has three solid rubber tires that allow for smooth movement. The design and placement of these wheels make this Stair Climber Hand Truck easy to lug up flights of stairs.