Challenge's new Smart Tubeless Sealant is now available!Specifically conceived not to damage Challenge's high-end Handmade TLR tyres or Tubeless Tubulars. Smart Tubeless Sealant can close up to 6mm cuts and remains liquid for a long time, moving around the tyre without drying or balling up, especially after inflating with CO2 cartridge.Key Features:Closes cuts up to 6mm.Does not damage Challenge's;high-end Handmade TLR tyresor Tubeless Tubulars.Remains liquid for a long time,Moving around the tyre without drying or balling up,Especially after inflating with CO2 cartridge.