Park Tool DH-1 Dummy Hub Model-1/1 Classic CL Internal Lock Size Imperial 21

Internal Lock Size Imperial 21

Technicians must have a keen eye for grind quality as they manage many variables that influence the machine’s production

Held firmly in place with a rubber fastening system to suit a multitude of frame designs

Head dimensions: 9

1 Lock-On Grip System = 100% Slip Free performance

Park Tool DH-1 Dummy Hub Model-1/1 Classic CL Internal Lock Size Imperial 21Park Tool DH 1 Dummy Hub. The DH 1 Dummy Hub slides into the rear dropouts of a bicycle frame and replaces the rear wheel keeping the chain in place while the wheel is removed for cleaning service or transportation. The unique design allows the bicycle to be pedaled and the derailleur to be shifted making the DH 1 an essential tool for chain cleaning or diagnosis of drivetrain issues. Compatible with all multi speed and 1 8" chain Compatible with