Weldtite 700 x 18C 25C Self Sealing Innertube (Presta) 700X18 25C

Dr Sludge inner tubes prevent flat tyres, seal punctures instantly up to 3mm in diameter, will work time after time, are water based with anti-corrosion properties that are completely harmless and will not dry out regardless of outside temperatures. Reliable, not sticky, individually tested... in other words, theyre great!