(ZE) head and rear bed boards,with self-locking device,available for CRP 1100mm long PP big fence, aluminum alloy, steel locking device Hidden crank, steel universal joints, screw protection device is equipped with roll-off Configuration stainless steel drip stand,Rotary table, aluminum alloy locking device 5 "castors with brake stability and flexibility Backrest angle adjustment:≥75° Leg plate angle adjustment:≥45° Bearing capacity:235kg