The first tubeless sealant in the world, formulated by our founder Stan in 2001 and still the number one choice of riders today. Recommended for all-around use, compatible with all tubeless road, gravel, and mountain bike tires The Original formula is the best choice for providing reliable puncture sealant performance over a 2-7 month period, however arid conditions may require more frequent monitoring of liquid sealant levels. Anti-freezing agents allow for use in temperatures down to -20ºF. FEATURES: The world’s first tubeless sealant and the first choice of riders today Recommended for all-around use, compatible with all tubeless road, gravel, and mountain bike tires Seals punctures up to 6.5mm (¼”) Compatible with valve installation using Stan’s Tubeless Sealant Injector Remains liquid inside tires for 2-7 months for long-lasting protection)