Slide handle out of one set of tubes and into the other, the hand truck dolly can converts from two-wheeled hand truck to four-wheeled platform truck,Which can meet your different needs in different environments. HEAVY DUTY CONSTRUCTION:Made of sprayed metal,the platform cart with durable welded construction has high strength and not easy to deform.2 wheeled hand truck can hold 220lbs capacity and 4 wheeled platform truck can bear 330lbs capacity HIGH QUALITY WHEELS: Equipped with 2 8.6-inch PU tires and 2 2-inch swivel casters,it can be used thousands of times without damage or deformation ,regardless of the load, it can run smoothly. EASY TO ASSEMBLE&CARRY: Only need to install four wheels, and the assembly can be completed in a short time according to the instructions.The shortest height of the two-wheeled trolley is 37 inches, easy to carry and store.MULTIPLE APPLICATIONS:Widely used for indoor and outdoor loading and unloading or moving,Such as warehouse,garden,construction site,hypermarket,office. Main Color:Black Main Material:Metal