The Halfords Presta Bike Inner Tube is a durable replacement tube for 700c wheels, perfect for quick bike puncture repair on the go. This valve inner tube features a 44mm valve for easy inflation and fits 700c x 28c–38c wheels, also compatible with 27" x 1 1/4" tyres. A reliable spare for cycling emergencies, it helps get you back on the road quickly while maintaining smooth rides. Buy your bike inner tubes at Halfords, the UK's largest bike accessories retailer.