Schwalbe AV 4 Inner Tube 16 / 18 x 1 3/8 - 40mm Schrader Valve

Product information for Schwalbe AV 4 Inner Tube 16 / 18 x 1 3/8 - 40mm Schrader Valve

Try out this premium Schwalbe tube on your BOB trailer or other bike cargo trailer with 16″ wheels. The #3 tube is recommended for larger 1.75″ to 2.125″ tire sizes including the BOB Yak and Ibex tires Schwalbe Marathon 16 x1.75 Maxxis Hookworm and the Schwalbe Big Apple. This is what Schwalbe has to say about these tubes: “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.