Swapping an end plate is the process of removing the old end plate from a barbell and replacing it with a new one. End plates are the discs that are located at the ends of a barbell and hold the weights in place. They are typically made of metal and can vary in size and weight. Swapping end plates can be necessary for a variety of reasons, such as changing the weight of the barbell, replacing a damaged end plate, or simply changing the look of the barbell.
There are a few different ways to swap end plates, but the most common method is to use a barbell jack. A barbell jack is a device that is used to lift the barbell off the ground so that the end plates can be easily removed and replaced. Once the barbell is lifted off the ground, the old end plates can be removed by simply unscrewing them from the barbell. The new end plates can then be screwed on in their place.