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!