Refill Pack for Dynaplug tire repair kit. Five viscoelastic rubber-impregnated cords mounted to pointed, non-abrasive brass tip that helps ensures ease of insertion. This system differs than the traditional reamer and eyelet-hook with gummy rubber strips and sometimes a bottle of vulcanized glue in that, well it doesn’t need any of that stuff. No reamers (which Dynaplug contends can cause further damage to tires), no glue, no need for multiple tools. Works best for punctures up to 3/16" in diameter.