The Halfords Schrader Bike Inner Tube fits most 20" bike wheels, offering reliable performance for everyday cycling. Designed for bikes with car-type valves, this durable inner tube is ideal for quick replacement after a puncture. Compatible with 20" wheels and tyre widths from 1.5" to 2.1", it ensures a secure fit and smooth ride. Buy your bike tyres & inner tubes at Halfords, the UK's largest bike accessories retailer.