High quality Schwalbe inner tube in Presta valve (French) format. Resated from official literature: "Extremely air-tight! Less air loss means having to inflate less often. Our unique rubber mixture makes it possible. Extremely reliable! Each SCHWALBE tube is individually examined twice at the factory to ensure air-tightness. Special quality control that prevents unpleasant surprises." 40mm valve stem, for use together with rims having Presta/French valve drilling. Weight: 85g Compatible with the follwing tyres: 28-340 400 x 30A 28-349 16 x 1 1/8 28-349 16 x 1.10 28-355 18 x 1 1/8 28-355 18 x 1.10 30-349 16 x 1.20 32-340 16 x 1 3/8 x 1 1/4 400 x 32A 32-349 16 x 1 1/4 32-349 16 x 1.25 32-355 18 x 1.25 35-349 16 x 1.35 35-355 18 x 1.35 37-340 16 x 1 3/8 400 x 35A 37-349 16 x 1 3/8 37-349 16 x 1.40 Airtightness: Schwalbe tubes retain air pressure considerably longer. The quality and the material purity of the rubber mixture directly effects the quality of the tube. Each Schwalbe tube is individually inflated and inserted into a mold. This ensures the even wall thickness and excellent air retention. Reliability: Consistent quality control brings with it the security of use: Each tube is inflated at the factory and stored under pressure for 24 hours in order to test the air retention. Group Tube System: The high elasticity and quality material used in our tubes allows a great many tyre sizes to be covered. Only an extremely high-quality and reliable tube is up to this requirement. Retains pressure longer! In comparative tests against other tubes (including named brands, own-label brands and no name products). The result was clear. Over a period of 30 days the other tubes lost nearly twice as much pressure than Schwalbe tubes. Possible reasons: Less butyl content, or lower quality of butyl. Schwalbe is uncompromising in its standards, despite ever increasing world market prices of butyl. Please visit our website at http://www.ecomtb.com.my OR https://shopee.com.my/eco_mtb ** There is 1-3cm errors due to manual measurement. Please kindly understand. ** Actual product colour may slightly vary due to photographic lighting sources or your monitor settings. ** WE DO NOT DO COD ** ONLINE ONLY ** We support original products only. ** PRICE INDICATED IS ALREADY BEST PRICE, EXCLUDE COURIER