Slime Self-Sealing Tube - 24 These are no ordinary bicycle tubes! These extra strong inner tubes stop flats for 2 years because there is Slime inside. ?Çó No more flats for 2 years! ?Çó Extra strong because theres Slime inside ?Çó Instantly seals tread area punctures up to 1/8?Ç? (3mm) in size ?Çó Seals multiple punctures repeatedly ?Çó Non-toxic and non-flammable ?Çó Cleans up with water ?Çó Tube sizes and valve types available for nearly every type of bike. See the Sizes & Specs tab for size and valve details. Works in bicycles, wheelbarrows, wheelchairs, jogging strollers, snow blowers and much more. Stop flats for 2 years!