Locking/unlocking system to lock the separable stretcher into the trolley. The backrest can be adjusted from 0 - 65 deg by gas spring.Only one person can slide the stretcher on to the ambulance. It is made of high-strength aluminum alloy. If you have any problem. Is really important for us. The item "Ambulance Stretcher Multifuntional Emergency CE/FDA MODEL 14F 191-MayDay" is in sale since Monday, February 4, 2019. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Caregiving Furniture\Other Medical, Lab & Caregiving Furniture". The seller is "angelusadscorp" and is located in Fort Lauderdale, Florida. This item can be shipped worldwide.