Hauck Runner Replacement Inner Tube Set of 3: This set, which is the Pushchair Repair Kit 3W, includes two 16-inch and one 12-inch inner tubes with Schrader-type valves, along with tire levers for easy replacement. Compatibility: It is designed for Hauck Runner series pushchairs (Runner, Runner 2, Runner 3), but the inner tubes can be used with other pushchairs with wheels of the corresponding sizes.