It may look like a syringe for a surgical procedure, but don't let its technical good looks perturb you. The tubeless-ready (TLR) sealant injector is easy to use and will save you from the woes of sticky sealant, because nobody has time for that.Product detailsEasily, precisely and cleanly inject sealant into your Tubeless Ready systemsCompatible with Presta and Schrader valves