Presta or Schrader?
How to find the right type: Briefly look at the valve on your bike. A Presta valve is narrower, usually made of metal, and has a small knurled nut at the top to open it. It is often used on road bikes, gravel bikes, and mountain bikes. A Schrader valve is wider, more robust, and looks like a car valve. It is often found on city bikes, trekking bikes, and children's bikes.