This 4 in 1 hand truck has the versatility for every kind and size of job. It easily converts to different positions. (No bolts or screws) The built in nose plate extension folds down to support extra large loads. There is a 45 incline position for support in handling while transporting the load. The 52.5 inch height is great for high stacking applications while in the 2 wheel vertical position. This unit can be quickly converted from a 2 wheel cart in the vertical position to the 4 wheel platform cart in the horizontal position. This allows it to be used for a wide variety of loads. The 4 in 1 truck has a load capacity of 800 in the vertical position; 500 in the 45 incline position; and 1000 in the horizontal position. The 10 inch puncture proof tires never go flat.