(ZE) head and rear bed boards,with self-locking device,available for CRP Aluminum Alloy folding barrier,Separated with the Anti-Pinch hand sliding pad Hidden crank, steel universal joints, screw protection device is equipped with roll-off Configuration stainless steel drip stand 5 "central control castors, with a two-way side brake control device Backrest angle adjustment:≥75° Leg plate angle adjustment:≥45° Bearing capacity:235kg