Weldtite Self Sealing Inner 26" TubeNow pre-filled into inner tubes in the correct dosageFeatures: Prevents flat tyres Seals punctures instantly up to 3mm diameter Works time after time Water based with anti corrosion - completely harmless Inner tube and tyre will not stick together Will not dry out regardless of outside temperature Every inner tube is individually tested before leaving the factory.Buy Weldtite Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.