Schwalbe AV2 Tube 16 Inch
The Schwalbe AV3 Tube is matched to the Schwalbe Marathon Race. The standard 16 Strida tube will work in the Schwalbe Marathon Racer 40-305 tires but the Schwalbe AV2 tube is matched for the correct size. The Schwalbe AV2 is a high quality tube. For more information here is a link to the Schwalbe’s Website.