Features: This movable wheels tray is ideal for placing your washing machine, refrigerator or any home appliances, convenient for cleaning and moving, will also help to keep your appliances out of the water as it lifted the appliances away from the floor. How to install: 2.After preparing, insert the four stainless steel tube into the triangle panel; 3.Then adjust the trolley size, fixed it with screws; 4.Puts anti-slip mats on the trolley. Specifications: Material: Plastic and Stainless Steel Color: Grey and Black Type: Adjustable Movable Base Max Weight Capacity: 250kg/551lbs Size: Extendable Length: 50cm-60cm/19.69-23.62in Extendable Width: 45cm-58cm/17.72-22.83in Height: 10cm Package Size: 43 x 20 x 13cm/16.93 x 7.87 x 5.12in(L x W x H) Shipping Weight: 2.6kg Package Included: 1 x Refrigerator Wheels Base 1 x Screw Accessories 4 x Anti-slip Mats Note: - To maintain the force balance, the connecting tube must be in the middle position. - Please refer to the measurement. Tiny