The Muc-Off No Puncture Hassle Inner Tube Sealant is easy-to-install and the cutting edge molecules seal holes in tubes of up to 4mm ensuring that your ride is uninterrupted. Muc-Off’s proprietary water-based non-hazardous formula was developed specifically for use with inner tubes and is compatible with a wide range of bikes. This ingenious sealant works in temperatures from minus 15 to plus 50 degrees Celsius, can be used on Road, CX/Gravel, and MTB inner tubes, and is compatible with both Presta (with removable core) and Schrader valves. So, whether you’re commuting, out on a backpacking adventure, hitting the trails and everything in between, Muc-Off have you covered.