Works Components GEO Chainring SRAM 3-Bolt 30T Boost 3mm BlkNew design! Fits SRAM GXP CNC machined in house in the UK from 7075 T6 aluminium, anodised Learning from years of experience our tooth pattern has been optimised to increase longevity and performance in poor conditions Designed to work with 10, 11 & 12 speed (Eagle) chains TECH SPECS Primary Color Black Speed 12 Teeth 30 BCD Direct Mount SRAM 3 Bolt Material 7075 T6 Aluminum Position Front Chainring Comp. Offset 3mm