Ideal for Tubeless conversion. Made by Stan's NoTubes! Also can be used preventatively as a protection against puncturing a tube, galus or conventional Tubeless system. Dosage: 60 ml/sheath (road bike 30 ml). Acts for 2-7 months. It then dries to a rubber film. Can be renewed. Suitable only for tubes with removable valve. Does not work on larger scale punctures (chipping/cracking).