Metal Plate: Made of high quality thick metal steel pipe material, which is better strength and hardness than others.Can bear 300kg (661lb). and for better corrosion resistance in environments wet. 24 wheel upgrade: anti-slip noise reduction, more contact surfaces, with non-slip pads, stable non-slip material, with non-slip brake pads, with locking function, easy braking and locking. Ensure good stability under the boundary conditions. Size adjustment: two-row, one-piece design can be adjusted without considering the width, free adjustment adjustable length from 45-70cm, universally applicable for different models. Our fixed height is of 4 cm to ensure the stability of the washing machine. Good household helper: It allows you to easily move heavy items and clean the floor from heavy items 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