LifeLine MTB Inner TubeLifeline’s MTB Tube provides excellent value for money. The inner tubes have been produced from high quality butyl rubber. An old wives’ tale will tell you that if you buy cheap, you buy twice. Not here. This inner tube has been rigorously tested to ensure that there is no air leakage, thus ensuring excellent reliability and durability.Features: Material: Butyl Rubber (tube); Nickel Plated (Presta valve) 1mm thick walls Air leakage tested Great value Presta valve Includes lock ring and cap Non-removable valve cores Recycled packaging Made in Indonesia Weights (All weights +/- 10%): 26″ x 2.1″ – 2.5″ Presta 48mm: 255±13g 26″ x 2.1″ – 2.5″ Schrader 33mm: 256±13g Buy Lifeline Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.