Material: 1)Bed frame and mattress base are made of Powder Coated Steel. 2) Detachable Bed head/footboard are ABS Plastic 3) Four pieces of foldable PP side rails. 4) Control by Cranks 5) Sleeping platform with Soft Connecting Functions: The angle of the back section:0-80�° The angle of the knee section:0-40�° Adjustable height: 450 to 700mm Standard Accessory: 1)Two sectional S/S Drip Stand 2)Four pieces of PP side rails 3)Three Pieces Plastic Cranks 4)Four Pieces125mm diameter Central Locking Wheels