Sludge road sealant was designed specifically for road bikes with Presta valves. This product contains micro-fibres to allow the sealant to pass through the valve. It will help to prevent and repair flat tyresa. This can be used for mountain bikes that have a Presta valve, but it will only work for small punctures like thorns. This 100ml bottle will do two road wheels or one mountain bike wheel. Features:- Produced in South Africa

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