Metal Plate: Made of high quality thick metal steel pipe material, which is better strength and hardness than others. Can bear 300kg.and for improved corrosion resistance in humid environments. Upgraded 24 wheels: anti-slip noise reduction, more contact surfaces, with anti-slip pads, stable anti-slip material, with anti-slip pads, with braking function, easy braking and locking. Ensure good stability in boundary conditions. Size adjustment: Double-row and one-piece design can be adjusted without considering the width, free adjustment adjustable length from 45 to 70 cm, universally applicable ensures different models.Our fixed height is 4 cm for the stability of the washing machine.Good household helper: It allows you to easily move heavy objects and clean the floor of heavy objects without installation, suitable for any floor.Easy to assemble: no need to install, just put it on.keep washing machines away from the floor, avoid direct contact with the floor, provide great convenience for cleaning the floor.