This syringe injects cafflatex sealant through the valve in a controlled fast and clean waycharacteristics multi valve works for both presta removing or not the valve core and schrader valves and comes with a long silicone tube for easy application capacity maximum 100 ml usage tips with the valve at a 3 or 9 oclock position completely remove the piston from the syringe and connect the syringe tube to the valve using the appropriate adapter once connected keep the syringe vertica