Convenient dolly 2-pack holds up to 300 pounds and transforms into a 4-wheel hand cart that holds 400 pounds Converts from a 2 wheel dolly to a 4 wheel cart in seconds, letting you carry larger and heavier boxes with ease Adjust the telescoping aluminum handle into 1 of 3 positions to fit your transportation style Built-in stair glides allow you to effortlessly move up and down stairs or curves, letting you go wherever you need Glass-filled nylon frame weighs less than steel while retaining strength; Dimensions (L x W x H):? 16 x 16.50 x 41 inches; Weight: 17.50 pounds Perfect for transportation heavy boxes and items wherever you need to go, the Harper Trucks Convertible Hand Truck and Dolly 2-Pack converts from a 2-wheel dolly to a 4-wheel cart for more hauling options. Designed for moving heavy loads, the utility cart converts into 2 modes for better use. The 2-wheel dolly holds up to 300 pounds on the large, 8-inch wheels, and the 4-wheel cart form holds up to 400 pounds using the additional 3-inch casters. A telescoping aluminum handle adjusts into 1 of 3 positions to fit your transportation needs. Built-in stair glides help maneuver the dolly up stairs and over curbs, reaching your destination with ease. The super-strong frame is built from glass-filled nylon plastic, which weighs 30-percent less than steel without sacrificing any strength. Helping you move loads with ease, the Convertible Hand Truck and Dolly 2-Pack by Harper Trucks gives you the lifting capacity needed for easy and efficient transportation.