If you ever performed Olympic lifts or deadlifts you would know how tiring and time consuming bar loading can be. The single arm design gives you all the functionality of a full sized barbell jack with the convenience of a smaller footprint and easier storage. It works on a simple lever principle - slide it under the barbell near the collar and leverage the weight up. The weight plates are then lifted from the floor, making them easy to remove or add. The Barbell Jack features a special polythene protection at the bar contact points so that you will not damage your knurling.