The best Singlespeed cogs(sprockets) on the market. Thanks to the unique tooth shape, narrow-wide profile and perfect roundness these sprockets will outlast any other aluminium counterpart. Size: 16T(23g), 18T(24g), 20T(29g)Chain compatibility1X, 6/7/8/9/10/11/12spd chains. (Not compatible with half-link chains.)To utilise narrow-wide feature please use 9/10/11/12spd chain. Each tooth is much wider and "square like" compared to a commonly used shape. Addition of narrow/wide profile, taken from our award winning SRAM spiderless chainring, provides additional teeth strength and offers greater chain retention if a tensioner or chain gets loose while riding. This is the first cog on the market offering such a feature.Fits to almost every hub on the market. Please note that some freehubs may be a bit out of tolerance, so the cog may fit tight in such case. This is absolutely normal.
