These Wolf Tooth aluminum single speed cogs feature extra tall teeth for reliable chain retention when using chain tensioners.

• Item weight: 21g
• Crafted with strong and lightweight premium 7075-T6 aluminum
• Optimized for use with 9,10,11 speed chains, but suitable for use with some 12-speed chains
• Reversible and 4.5mm wide at the base to help prevent cog from damaging your freehub body
• Fits Shimano Hyperglide style freehub splines
• Not compatible with Shimano Microspline or SRAM XD freehubs
• Not compatible with Campagnolo 13-speed chains

Wolf Tooth Aluminum Single Speed Cog Driver and Single Cog UPC: 812719025294