Continental Mountain Bike Inner Tubes with 42mm Presta Valve (Set of 3),Black,29" x 1.75-2.5Continental 29" x 1.75-2.5 Mountain Bike Inner Tubes with 42mm Presta Valve (Set of 3)Features of Continental Mountain Bike Inner Tubes with 42mm Presta Valve (Set of 3),Black,29" x 1.75-2.5 Set of 3 high quality Continental inner tubes | Designed for 29" Mo..