A heavy duty tyre sealant. Prevents punctures and stops deflation as you drive: seals a hole in the tread area the moment the puncture happens. Designed for use in harsh off-road environments. Lasts the legal life of the tyre. It will provide a permanent seal to any hole in the tread area caused by puncturing objects with a diameter of up to 12mm. (In practice, it has sealed holes up to 20mm in large tyres). For both tubeless pneumatic tyres & inner tubes(cannot seal as large a hole in tubers, and slits will not be sealed).