Check the listing for details. Hold Fast Cycling Tubeless Tire Sealant Injector - Bicycle Sealant Filler. Condition: New. Listed at 7.99 USD. Tubeless Sealant injector from Hold Fast. The Hold Fast Xfer'r can be used for adding new sealant to tires as well as transferring old remaining sealant during tire swaps. To transfer old sealant, remove one bead of the tire and use the syringe to suck up remaining sealant. Then inject back through valve or pour into tire. For presta valves only. Check out Hold Fast Cycling's other listings in our store (link below) for more great bike products at unbeatable prices. We offer the best bleed kits on the market with the most options. Plus we use the exact same manufacturers as the major brands and offer tape and valves in nearly every size you could imagine. We are constantly adding more bike products, so subscribe to our store for notifications. Hold Fast Cycling also offers super fast shipping on all orders, and will often get your order out the same day.Tubeless Sealant injector from Hold Fast. The Hold Fast Xfer'r can be used for adding new sealant to tires as well as transferring old remaining sealant during tire swaps. To transfer old sealant, remove one bead of the tire and use the syringe to suck up remaining sealant. Then inject back through valve or pour into tire. For presta valves only. Check out Hold Fast Cycling's other listings in our store (link below) for more great bike products at unbeatable prices. We offer the best bleed kits on the market with the most options. Plus we use the exact same manufacturers as the major brands and offer tape and valves in nearly every size you could imagine. We are constantly adding more bike products, so subscribe to our store for notifications. Hold Fast Cycling also offers super fast shipping on all orders, and will often get your order out the same day.