CST LIGHT INNERTUBE/INTERIOR/INT 700x18/25c fv48mm **isa**(good for 40mm below rim height)

️ACTUAL PICTURE POSTED!!️ NEW CST LIGHTWEIGHT INT ️ AVAILABLE SIZES️ 700x25-32c FV48mm About CST CST is established in Taiwan in 1967, top 10 tyre manufacturer in the world. CST sponsored Team Ajax in 2018, also the parent company of Maxxis. Brand: CST Dimension: 700C Valve: Presta Width: 18-25C / 25-32 Package: CST Paper Box Butyl Rubber Valued for its inertness and impermeability feature, butyle rubber is the perfect material for tube. How to select a inner tube? Determine your rim height. Normal rims heights are 24 30 38 50 60mm etc. 48mm valve is enough for most alluminum rims which are of 24 or 30mm rim height. Valve Length It is suggested that the valve length is 10cm longer than your rim height or more. Tube Width Width of the tyre need be within of range of inner tube. For example, a 700*23c and 700*25c tyre are compatible with the 18-25C tube. But a 700*28c tyre is not matched with the tube.