The Nishiki(R) Presta Valve 700c 20-25 Bike Tube makes it fast and easy to replace your worn out bike tube. It's designed to fit 700c tires that have a width range of 20-25. It's 33mm in length and will allow you to get back on the roads in no time. FEATURES: Replacement bike tube Best for road, hybrid, or cruiser bikes Fits 700c tires with a width range of 20-25 Valve type: Presta Valve length: 33mm Valve width: 33mm Tube width: 33m Tube thickness: .95mm