Easy to Assemble: no tools required (Some parts have been pre-loaded). Two spirit levels at 90 degrees to each other on each of the four segments of this adjustable base, so it was not difficult to adjust it to be level in each direction before we placed the appliance on it. Adjustable Size and Loading Capacity: It is a telescopic base that can adjust vertically and horizontally according to the width of the appliance. Length/width: 42cm-65cm. Height: 10-15cm. The Maximum Load: 350kg. Enhanced Stability: Our adjustable appliance base trolley has 4 strong feet + 4 locking rubber swivel wheels. Stay firm and also is easy to move with swivel wheels, which is convenient for cleaning and reworking. Safety design: Button-type lock. 4 pieces of anti-skid pads. Anti-vibration mute. Embedded horizontal device. Suitable for dryer, washing machine, refrigerator, air conditioner, heavy equipment, large plant pots and so on.