Zipp Tubeless Sealant Injector Description: Utilize this Zipp Tubeless Sealant Injector to properly install the sealant of your choice through standard tubeless valves, or smart valve configurations found on Zipp 303SW (A1) and Zipp 353 NSW (B1) wheelsets. Features: Tubeless tire sealant injector Flexible hose tip eases the process of installing tubeless sealant Universal compatibility with removable core tubeless valves Compatible with smart valve-sensor technology found on 303SW and 353NSW wheels