【Furniture Movers with Wheels & Lifter Kit】 Includes 4 heavy-duty furniture dollies, 4 height spacers, and 1 pry bar, giving you everything you need to lift, position, and move heavy furniture smoothly and safely. 【Thickened Carbon Steel Mover Panels】 Our upgraded heavy duty furniture mover panels are made of 2mm thick carbon steel. Each dolly supports up to 500 lbs, and four dollies working together handle up to 2000 lbs without bending or deformation, making it ideal for moving heavy furniture, appliances, and equipment. 【Upgraded Double-Wheel Design】 Each furniture moving dolly is equipped with an upgraded double-wheel design for better balance, smoother rolling, and improved weight distribution. The two dolly panels feature a lift-and-lock mechanism that secures furniture by simply tightening the screws, offering greater stability and safety than traditional wheel brakes. NOTICE: For best results, use on flat, smooth surfaces. Not recommended for use on carpet. 【Security Protection】 This furniture dolly 4 wheels heavy duty comes with a rounded groove design that can firmly hold items with legs and prevent them from tipping over during transport. This innovative feature is perfect for safely moving tables, chairs and other furniture with legs, making the furniture lifter mover stand out for safe and controlled moving. 【Wide Range of Uses】 Our furniture movers with wheels and locks make it easy to move a wide range of furniture and appliances, including sofas, refrigerators, washing machines, tables, closets, and safes. Safe for use on hardwood, tile, and marble floors. If you have any questions or concerns, please contact us, and we’ll be happy to help. Furniture Dolly Set