The Halfords Presta Bike Inner Tube fits most 27" and 700c wheels, providing a reliable replacement for smooth cycling. Designed for tyre widths from 38c to 45c, this inner tube features a 44mm Presta valve for easy inflation and secure fit. Durable and easy to install, it ensures a smooth, comfortable ride and is ideal for replacing a damaged tube after a puncture. Buy your bike inner tubes at Halfords, the UK's largest bike accessories retailer.