The stans notubes race tyre sealant quart has been developed as a high performance sealant that meets the demands of any racer this new sealant improves on the already brilliant stans notubes design to create a faster working liquid that seals larger punctures across a wide range of temperatures featuring twice the number of sealing crystals and including larger crystals over the standard model stans notubes race sealant guarantees superior sealing power that will change your riding life