Mount type: 94 BCD 4-bolt for Sram Teeth: 30t Offset: Non-boost (Standard offset) Chain Compatibility: Drop-Stop A tooth profile for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains US Patent 058123, Material 7075-T6 aluminum, Made in USA by Wolf Tooth Components Chainring that fits any SRAM crankset with a 94 BCD. High quality chainring with Wolf Tooth's patented Drop-Stop technology. Aluminum. 30t