Don't let a flat tire ruin their fun bike ride. The Nishiki(R) Schrader Valve 16'' 1.75-2.25 Bike Tube takes no time to replace an old bike tube and offers durability and lasting use. This bike tube is designed for 16" tires and is equipped with a Schrader valve that is 35mm in length. It fits tires that are 1.75-2.25 wide and is great for youth bikes such as mountain, hybrid, sidewalk, or cruisers. FEATURES: Replacement bike tube Best for youth bikes Fits 16" tires with a width range of 1.75-2.25 Valve type: Schrader Valve length: 35mm Tube width: 42mm Tube thickness: .95mm