The CST Inner Tube 700c x 18 - 28 mm with 40 mm presta valve are an exceptional value inner tube.

CST stands for Cheng Shin Tyre and are made by Cheng Shin Rubber Ind. Co. Ltd . Employing more than 20,000 people, Cheng Shin Tyre is the largest manufacturer of bicycle tyres in the world
Distributed in more than 150 countries, the CST brand covers a wide range of market segments. CST specialise in cycle tyres and bike inner tubes with factories in Xiamen and China. CST’s operations boast world-class manufacturing equipment, innovative technology and a strong emphasis on quality and customer satisfaction. CST adheres to the most stringent international standards. The company has attained certificates and awards including DOT (US Department of Transportation) certification, ISO9002, E-Mark, and TS 16949.