Q-Tubes 27. 5" Schrader Valve Tube These Q-Tubes come in a wide width range (2. 0" - 2. 5") and have a valve length of 48mm with a removable core. The 2. 0" - 2. 5" width is super accommodating. These inner tubes can be used to tire widths between 2 inches and 2. 5 inches. That's a huge range! Q-Tubes 27. 5" Schrader Valve Tube Features : Wide Width Range Schrader Valve 27. 5"x2. 0-2. 5" Weight: 250 g | Quality | Teravail 27. 5" Schraeder Valve Tube 2. 0-2. 5