Repairs large punctures and slices.. Reacts with Stan’s sealant to form an instant, airtight seal. Barbed plastic tip anchors into tire and will not pull out when riding. Flexible material and laser-cut shape conforms to puncture and bonds with sealant. Wears off clean, no trimming needed, and can not be felt while riding, even on road tires. Lightweight, compact tool fits the shape of your hand for more precise use and includes built-in valve core remover. Clear caps keep DARTs clean and unthread quickly for fast deployment. Simple and easy to refill. Includes: Two pre-loaded DARTs for sealing multiple and larger punctures.