Park Tool Dummy Hub DH-1 Size:NONE an internal pocket and our

an internal pocket and our built in reflectivity the Grid Small is perfect for road cyclists

- COB LED (50 lm)

The valve is protected to avoid accidental engagement and our design allows you to easily control the rate and flow of CO2

The Boundary CO2 offers a fast and efficient method to reinflate your tire in an emergency

That's why we decided it was time to develop the ultimate

Park Tool Dummy Hub DH-1 Size:NONE an internal pocket and ourThe 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. DH 1 Features Compatible with all multi speed and 1 8" chain Compatible with quick