Feature: 1. 300KG Load Bearing: Heavy duty appliance rollers have a load bearing capacity of 300KG and are widely used in washing machines, refrigerators, closets, cabinets or other heavy furniture. 2. Double Row 24 Wheels: Equipped with 24 upgraded small wheels, moving more smoothly, the mobile base can easily move heavy furniture and household appliances, which helps to clean corner places. 3. Sturdy Material: Refrigerator appliance rollers are made of iron, nylon, silicone material, high hardness, very strong, rust proof, wear resistant, heavy duty. 4. Easy to Install: The heavy duty extensible appliance Roller is easy to use, does not require complicated installation steps or tools, and can be installed and placed under the appliance for use. 5. Detachable Portable: When the furniture washing machine dolly is not in use, it can be stored in any corner of the room, easy to disassemble and save storage space. Specification: Item Type: Heavy Duty Extensible Appliance Roller Material: Iron,Nylon,Silicone Shortest:Approx. 45cm / 17.7in Longest:Approx. 70cm / 27.6in Width:Approx. 5cm / 2.0in Height:Approx. 4cm / 1.6in Weight: 300kg Pulley: Double Row 24 Wheels Compatible: Universal for All Machines and Furniture with 45 to 70cm Base Weight:Approx. 1289g / 45.5oz. Package List: 2 x Base 2 x Non Slip Mat Note: After moving the items, please make sure that the roller brakes are fixed to prevent the machine from shaking back and forth after it is turned on.