Applications: It is suitable for moving heavy and expensive commercial equipment, such as vending machines and photocopiers. The heavy-duty stair climbing dolly CT420 has a capacity of up to 420 KG, allowing you to transport cargo upstairs and downstairs by a single person. It can easily keep balance when climbing by automatically adjusting the cargo’s gravity center, and it can also move easily on flat ground with its flat ground mode, which makes moving safer and easier. More info