BICYCLE TIRE TUBE SIZE2 pack replacement bike inner tube 700C x 35-43 MM with 2 bicycle liner, 2 tire levers, Schrader Valve, 48mm with cap MORE DURABLEBike tube is made from premium quality Bicycle Dedicated Butyl Rubber, with great air tightness and longer lasting time EASY TO INSTALLThis bicycle tire tube is very easy to install, help you to save your riding time. (Tube pressure rating is dependent on the PSI rating of your tire. Please DO NOT inflate above pressure rating on tire) BICYCLE RIM LINER PROTECT INNER TUBE + TIRE LEVERBicycle Rim Liner can protect inside tire tube. It is better to use new rim liner to replace the old one when you replace the inner tube of the bicycle. The tire levers can help you easily grt your tube out from the tire when changing the tube RISK-FREE PURCHASEWe offer free return if you are not satisfied with the product. Please check the side wall markings on your tire to determine what tube size fits your tire. And please check your old bike inner tube valve to choose Presta or Schrader valve