Giant Sealant Check & Refill Syringe Description: Using the Giant Sealant Check & Fill Syringe is simple & effective. Install sealant though valve stems without having the coagulating particles clog your valves. Features: Clean handy tool to check and refill sealant in Tubeless Systems Easily inserts into the valve for quick filling Use to check the condition or level of sealant Easy volume gradient scale ensures the proper amount is used Includes: (1) 70ML / 2.5oz syringe (2) Sealant install lines with 2-way valve