Park Tool DH-1 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 5–13 speed derailleur chain and 1/8" width BMX and track chain. The unique design allows the bike to be shifted and works with open dropout and thru-axle frames up to 12mm.
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