The Tubeless Tire Plug Pack kit contains fifteen 1.5mm tire plugs and four anchors (two small and two large) that are optimized for use with the TCS Rocket Tire Plug Kit, but will also work with most multi-tools in a pinch. The small anchor holds up to two plugs and can be pushed into the tire using a 2mm hex. The large anchor holds up to four plugs and is compatible with either a 2mm or 3mm hex.