The Park Tool Gear Clean GSC-1 easily cleans you drive train and is 11 speed compatible. The toothed ended back reaches deep between gears to remove stuck on dirt and debris. Heavy duty nylon bristles clean hard to reach spaces in between the derailleur and chains. • Compatible with 11 speed cassettes
• Toothed end reaches deep between gears
• Nylon bristles cleans between derailleur and chain