Usage: Find the right spot for the puncture, scrape the punctured area with a metal file, place with self-adhesive patches and wait 1-3 minutes. Or stick it with glue (no glue in the package) the patch and wait a few minutes Material: rubber, metal, plastic Package includes: 1x metal grater 3x metal hoop levers 6x Round Self-Adhesive Patch (No Glue Required) 16x rubber patches (3 sizes, need glue, no glue in the package)