The DART is Stan&';s new tubeless tyre repair system, with neat plugs and a lightweight handle. The material reacts with Stans sealant to give both a chemical and mechanical method to repair a hole. a Repairs large punctures and slices a Reacts with Stan&';s sealant to form an instant, airtight seal a Barbed plastic tip anchors into tire and will not pull out when riding a Flexible material and laser-cut shape conforms to puncture and bonds with sealant a Wears off clean, no trimming needed, and can not be felt while riding, even on road tires a Lightweight, compact tool fits the shape of your hand for more precise use and includes built-in valve core remover a Includes two pre-loaded DARTs for sealing multiple and larger punctures a Clear caps keep DARTs clean and unthread quickly for fast deployment a Simple and easy to refill