The 4 Lot XLC 16x1.75/2.125" 35mm Schrader Valve Thorn Resistant Wrap Bike Tubes are high-quality bicycle tubes designed for 16-inch wheels with a 1.75-2.25 tube size. Made of durable rubber and featuring a 35mm Schrader valve, these black tubes are resistant to thorns and punctures for a reliable ride. Produced in Taiwan, this set of four tubes is perfect for cyclists looking for reliable performance and long-lasting durability on their rides.