Commonly known as a Dummy Hub, the Park Tool DH-1 Dummy Hub slides into the rear dropouts and replaces the rear wheel, so you can easily clean your chain and transport your bike with your rear derailleur and chain secured in place. It's compatible with all rear derailleurs and 1/8-inch chains, as well as working with both open dropout and 12-millimeter thru-axle frames.
Secures drivetrain while cleaning chain and transporting your bike
Compatible with all rear derailleurs and 1/8-inch chains
Works with open dropout and 12mm thru-axle frames
rear derailleurs, 1/8-inch chains, bikes with open dropouts and 12mm thru-axle frames