Praxis Works MTN 1x Chainring 32t 104 BCD Narrow WideNarrow Wide tooth profile for better chain retention Forged and machined 7000 series alloy with hard black anodizing for durability Works with 1x10 11 12sp Shimano, KMC and SRAM Eagle, Flat and T type chains Must use a clutch type rear derailleur. Ex: Shimano Shadow or SRAM Type2 Shimano compatible with both mechanical and Di2 Shimano 10 11 12sp. SRAM compatible with both mechanical and wireless SRAM 10 11 12sp In rough terrain, or just for pure