Aluminum CogDescription The Wolf Tooth Aluminum Single Speed Cog is built for riders who want a clean, dependable drivetrain without compromise. 7075 T6 high quality aluminum, this cog delivers smooth engagement, quiet operation, and consistent performance across trail, gravel, and urban single speed builds. Designed around Wolf Tooths proven tooth profile, it works seamlessly with modern derailleur chains while maintaining excellent chain retention under load.