Continental Bicycle Tubes Race 28 700x20-25 S42 Presta Valve 42mm Bike Tube Super Value Bundle (Pack of 5 Conti tubes & 2 Conti tire lever) Wheel Size: 700x20/25 (622), Valve: Presta (42mm), Claimed Weight: 105g All purpose inner tube and excellent replacement inner tube for your road bike Material: Butyl tubes with renowned Continental quality Durability: Each and every inner tube passes a stringent 100% quality control inspection Design: Seamless construction, with a mould-cured vulcanisation, to ensure uniform roundness and give a smooth ride and handling