Rabaconda Street Bike Tire Changer 15mm Spindle Kit Replacement 15mm Spindle Kit for the Rabaconda Street Bike Tire Changer. Kit includes 15mm spindle, 18mm wheel adapter and adapter for duck head ratchet system. Features: Replacement 15mm Spindle that comes with the Rabaconda Street Bike Tire Changer Kit includes 15mm spindle, 18mm wheel hub adapter and duck head ratchet system adapter