Park Tool RBS-25 Replacement Brush and Sponge Cartridge for CM-25 184x44 The smooth tread design lets

The smooth tread design lets you take your big mountain rig and travel effortlessly through the city

Can be cut down to suit rider taste or type of riding

Convenient carry bag

It's design allows you to easily mount your phone even it is already in a case

X-SYNC2 tooth profile chainring for complete chain control DUB technology’s patented spindle design and bottom bracket provides better sealing and forward and backward compatibility Direct mount interface compatible with chainrings across the entire Eagle Ecosystem

Park Tool RBS-25 Replacement Brush and Sponge Cartridge for CM-25 184x44 The smooth tread design letsSpecially designed brushes for cleaning hard to reach areas on most bicycles. Model RBS 25 Description Replacement Brush Cartridge for CM 25