Built with sturdy PVC pieces and stainless-steel poles, this dolly has a weight limit of a hefty 300lb, making moving large furniture or appliances like washing machines and dressers fast and effortless. Sitting on top of 8 rubber swivel wheels, this dolly roller can be moved across any smooth flooring with little effort. When you want the cart to stay still, four Double wheels lock with a flip of a switch to ensure the dolly wonât move unexpectedly. Suitable for dryer, washing machine, refrigerator, air conditioner, heavy equipment, heavy flower pots and so on. Base height of 4-5 inches, keep the bottom ventilated, easy to clean and reduce the water to keep clean. Durable , firm, adjustable dimension and convenient movement.