Lifting devices are used for lifting heavy loads. Manual lifting devices include cranes, buckets, magnets, grabs and other supplemental devices used for ease in handling all types of loads. Other examples of lifting devices include pallet jacks, hoists, wreckers, A-frames, slings, ropes, wire ropes, hooks, O-rings, pear rings, spreader bars or lifting clamps, beams, jacks, levers, lifts, forklifts, safety stands, and jack stands.