This product using the high-quality stainless steel,bearing force strong ,it can keep good stability under the condition of the limit ,adjustable in sizes, it fits for your most home appliances: washing machine/washer/dryer, mini fridge/dorm refrigerator, cupboard etc. Features: Easy to move and clean Maintains ventilation through the bottom of the appliance The 4-Fixed foot are suitable for all floor types The patterned corners maintain friction between the appliance Specification: Weight Capacity: 4 kg. The trolley wheels can hold up to 400kg Extendable Length: 51-72 cm Extendable Width: 46-68 cm Height: approx 10-15-20-25 cm, 4 size options. Package Included: 1 x Adjustable Castor Trolley