The first tubeless sealant in the world, formulated by their 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 tyres. 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 tyres. Seals punctures up to 6.5mm. Compatible with valve installation using Stan’s Tubeless Sealant Injector. Remains liquid inside tyres for 2-7 months for long-lasting protection).