Tubeless Conversion Kit 27.5"Zefals tubeless conversion kit makes going tubeless simple by using your present wheelset. The kit contains 125 ml Zfal Z Sealant enough to fit 2 tyres, 2 tubeless rim tape, 2 removable Presta tubeless valves, 1 valve removal tool, and detailed instructions to how to install the kit onto the bike. The tape is made of reinforced polyurethane to create a higher resistant sealing system. An easy valve removing tool makes easy work of adding sealant into