This Bag contains more than enough Upholstery Hog Rings to complete one vehicle. As you remove the old upholstery, you'll need to remove the hog rings as you go. Once cut and removed, they are no longer useable. Automotive Hog Rings are basically a specialized staple made for holding the upholstery to the listing bars attached to the seat. When the hog Rings are installed, they keep the upholstery stretched tight. The example below is a Hog Ring before and after it is compressed with the Hog Ring pliers.