Foundation Mountain Schrader 26" Bike Tube Make sure you always have an extra tube handy with the Foundation Mountain Schrader 26" Bike Tube. This tube fits 26" tires with a width of 2. 1" to 2. 4". This tube has a schrader valve and the tube is made out of butyl rubber. Features26" tube Fits 2. 1" to 2. 4" wide tires Schrader valve SPECIFICATIONSWheel Size26"Width2. 1 -2. 4Valve Type Schrader Removable Core No Stem Length / Type-Weight- | Foundation | Mountain Schrader Bike Tube 26X2. 1-2. 4", Schrader Valve Ll | Rubber