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Apart from the quality of the ingredients, the purity of the rubber mixture is crucial to the quality of the tube. The base material of the Schwalbe SV5 17 x 1 1/4''-18 x 1.75'' Inner Tube - Presta Valve is therefore sieved at enormous pressure through seven filters before being extruded. All tubes are inserted into a mould and inflated for vulcanization to ensure constant wall thickness and high air pressure retention. All Schwalbe tubes are inflated and stored for 24 hours in order to test for air pressure retention. Afterwards each, individual tube undergoes a careful visual inspection. This special quality control helps prevent unpleasant surprises and is why, over many years, Schwalbe tubes have become highly respected for outstanding reliability by bicycle dealers.
Evans Cycles: Worldwide Shipping Information
We offer a FREE International delivery service on most non-bike orders over £50. Costs for bike delivery varies depending on the destination. Orders delivered outside the EU are exempt from VAT. To calculate precise charges for your order simply add the desired products to your basket and proceed through the checkout process. During this process you will need to enter your delivery details. Based on this information our website will present you with the relevant delivery options and the charges for your basket of goods.