4 wheels on the bottom for easy movement. Specially integrated holes located on the lid allow the boxes to stack ontop of eachother even with the wheels. Ideal for use at home or in the workplace.Great for use as under bed or office storage as the wheels allow the box to be easily pulled out and pushed in when not in use. The item "Large 100L Heavy Duty Strong Clear Plastic Storage Box Container Lid Wheels" is in sale since Tuesday, April 26, 2016. This item is in the category "Home, Furniture & DIY\Storage Solutions\Storage Boxes". The seller is "midlandshardware" and is located in Birmingham, Warwickshire. This item can be shipped to United Kingdom.