Don't let a flat cut your training session short or hinder your commute-ride prepared with the Bell Standard Presta Valve 700c Bike Tube. Designed for road and hybrid bikes, this replacement tube fits 700c wheels. Its durable butyl rubber can handle uneven roads and bumpy paths. Its 33 mm fully threaded presta valve is quick and easy to fill even mid-ride. It is a must-have for your next workout.