The park tool truing stand upright extensions ruing stand upright extensions install in seconds on any ts 2 or ts 22 truing stand allowing the stand to be used on wheels with hubs up to 200mm wide tandem fat and downhill bikes as well as on wheels with a 29 mountain bike tyre installed park tool truing stand upright extensions features easily adapts the ts2 or ts 22 to be used on wheels with hubs up to 200mm also allows the stand to be used with wheels using 12mm