8oz slime w/core removal tool. One of the best inventions of all time!!! Slime will save your butt!! This product seals any puncture up to 1/8th inch over and over again. Expect the slime to work for about two year years! Will not work on big chunks of glass or huge blow outs, but it will work on thorn punctures and the like 100% of the time. Use it in all of your bikes, and spend more time riding and less time patching tubes. Please note that slime is not easily installed into presta type valves and is best used in tubes that have the more common schraeder type valve. Schraeder valves are the kind that cars use.