Park Tool DH-1 Dummy Hub ISO Width (mm)-24 The Asthma mask comes with

The Asthma mask comes with two sport/asthma filters

It works great on skis with a low wax camber

Designed and created for those who are looking for adequate support and stability on any type of terrain while at the same time guaranteeing excellent comfort

and no matter the crankset

Chainring BCD 107 Color Black Defined Color Black Defined Color List Black Designed for ebike Yes

Park Tool DH-1 Dummy Hub ISO Width (mm)-24 The Asthma mask comes withPark 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