The Nishiki(R) Presta Valve 700c 18-25 Bike Tube allows you to replace your flat or worn out bike tube fast and easily. This bike tube is designed to fit 700c tires with a width range of 18-25 and features a Presta valve that is 48mm in length. Ride confidently on the roads with the Nishiki(R) Presta Valve 700c 18-25 Bike Tube. FEATURES: Replacement bike tube Best for road, hybrid, or cruiser bikes Fits 700c tires with a width range of 18-25 Valve type: Presta Valve length: 48mm Tube width: 22mm Tube thickness: .95mm