The height of loading wheels is adjustable to fit different height of ambulance board. The bed surface is made of foamed cushion, the back can be adjustable by gas spring, which makes the wounded feel comfortable. There are fixed bracket which can fix the stretcher on the ambulance board. Only one person can send the patient to the ambulance. All-Metal Frame Construction---provides strength, long service life, and exceptional performance with heavy patients. The joint is cast by aluminum alloy. The mechanical folding legs are controlled by the handles on both sides.