Material: FRP/steel plate Features: 1.Four surfaces are covered by four glass windows or totally enclosed. High strength hydraulic jack, easy to open. 2.Independent imported mechanical latches, safe and practical; 3.Smooth and natural line design makes it perfectly fit the car; High brake lights are available; 4.Unique hole-free installation, no damage to the car body; 5.Lightweight FRP (glass fiber reinforced plastic) material with good corrosion and deformation resistance and strong loading capacity, yet without increasing excessive fuel consumption.