Park Tool Dummy Hub, also called a sleeping hub, the DH-1 slides into rear dropouts and replaces the rear wheel for chain cleaning and transport. The DH-1 works with all derailleur and 1/8″ chains. The unique design allows the bike to be shifted and works with open dropout and thru-axle frames up to 12mm.

DH-1 Instructions and Parts

Reviews:

Road.cc ReviewMakes cleaning and transporting bikes much easier, by allowing shifting and pedalling with the back wheel off.