Thickened high-strength material has strong load-bearing, anti-skid stepping is safer, and it is convenient for the elderly and children to get on and off the bus. The original car is molded to fit the body, which does not affect the passability and improves the appearance of the whole vehicle. Corrosion and anti-aging, durable and non-deforming, non-punching installation is firm and does not hurt the car, taking into account practicality and beauty. It is a necessary modification accessory for SUV travel