The DART is Stan’s solution to fix damaged tires faster, easier, and better than existing plug tools. While traditional tire plugs try to wedge rubber strips into a puncture, the DART creates a chemical reaction with your Stans sealant to quickly form a permanent airtight bond. The dual actions of the DART include the mechanical fill created by inserting a piece of material into the puncture and a chemical reaction that activates the sealant. The DART is good for repairing and sealing slices and large punctures in tubeless mountain, road, and gravel bike tires.