27.5"/650B Wheel Diameter x 2.1"-2.5" Width
54/64-584
PRESTA 48mm Valve

The LifeLine 27.5"/650B MTB Inner Tube is a high-quality component that fits 27.5/650B" MTB wheels and 1.75 - 2.5" tyres. LifeLine inner tubes are air leakage tested for reliability.

This mountain bike inner tube has a nickel-plated Presta valve, 1mm butyl walls and a threaded stem with lock ring.