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. In Schwalbe talk, the SV is presta and the AV valve is Schrader. These tubes will fit 451 tires from 28 - 37mm's in width.
For mile eaters. Durano, a 20 x 1 1/8" 451, is the right choice for high mileage purposes, because no other racing tire lasts longer. At the same time the Dual Compound offers great grip for training on wet winter roads. It has the proven RaceGuard protection belt. Inflates up to 120psi. Non-folding only.
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