Replace your worn out or flat bike tube with the Nishiki® Schrader Valve 27.5’’ 2.125 Bike Tube. This bike tube is designed to fit 27.5” tires and that are 2.125 wide, and features a Schrader valve that is 35mm in length. You’ll be prepared for the rocky trails with the Nishiki® Schrader Valve 27.5’’ 2.125 Bike Tube. FEATURES: Replacement bike tube Best for mountain bikes Fits 27.5” tires that are 2.125 wide Valve type: Schrader Valve length: 35mm Tube width: 50mm Tube thickness: .95mm