Stan's Dart tool refill pack includes 5 DART Refills (required DART Tool not included). 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 fabric conforms to shape of puncture and bonds with sealant Wears off clean, no trimming needed, and can not be felt while riding, even on road tires Includes sealed container and carrier rack for fast and easy reloads