Get ready for any unexpected punctures with this set of four 20-inch inner tubes with Auto/Schrader valves. Designed for Kids' bikes, BMX bikes and Mountain bikes, these tubes are made of high-quality rubber and are a perfect fit for 20 inch wheels. Manufactured in the Czech Republic by Mitas, a trusted brand in the cycling industry, these tubes are built to last and provide a reliable and comfortable ride. Stay ahead of the game and avoid any inconvenience by keeping these spare tubes handy.