Fine-tune the gearing on the Spank SS DJ hub using this freehub cog. HEX Rear Hub SS-DJ 11T Cog Freehub ~ 1-pcs 11T Single-speed Cog for SS-DJ rear hub ~ Material : steel ~ Weight (g) : 120 ~ Compatibility : SS-DJ Rear Hub ~ Steel 1-pcs 11T Single-speed Cog for SS-DJ Rear Hub ~ 3 bearings HEX Rear Hub SS-DJ 12T Cog Freehub ~ 1-pcs 12T Single-speed Cog for SS-DJ rear hub ~ Material : steel ~ Weight (g) : 125 ~ Compatibility : SS-DJ Rear Hub ~ Steel 1-pcs 12T Single-speed Cog for SS-DJ Rear Hub ~ 3 bearings HEX Rear Hub SS-DJ 13T Cog Freehub ~ 1-pcs 13T Single-speed Cog for SS-DJ rear hub ~ Material : steel ~ Weight (g) : 132 ~ Compatibility : SS-DJ Rear Hub ~ Steel 1-pcs 13T Single-speed Cog for SS-DJ Rear Hub ~ 3 bearings Please visit our website at http://www.ecomtb.com.my OR https://shopee.com.my/eco_mtb ** There is 1-3cm errors due to manual measurement. Please kindly understand. ** Actual product colour may slightly vary due to photographic lighting sources or your monitor settings. ** WE DO NOT DO COD ** ONLINE ONLY ** We support original products only. ** PRICE INDICATED IS ALREADY BEST PRICE, EXCLUDE COURIER