Wolf Tooth 104 BCD Stainless Steel ChainringReady for adventure, this solid component is compatible with 104 BCD crankset for a perfect fit. It features Wolf Tooth’s patented Drop Stop technology which uses a narrow/wide tooth pattern to improve chainring life. This superb version’s wide side of the tooth has maximum contact on the drive side which spreads the load while its narrow side allows for mud and debris clearance. Compatibility:These are functionally the same as the aluminium 104 BCD rings. These rings fit any 104 BCD crankset, and here are instructions on how to measure your BCD. Notes for those the plan to run a 32t chainring on a 2x Shimano crankset (XT, SLX, or Deore). 30t x 104 ring is the only Quarq power meter compatible 30t ring available.For 1x9, 1x10, 1x11 and 1x12 drivetrains (including SRAM Eagle) Compatible with all 10-, 11-, and 12-speed chains except Shimano 12-speed chains. If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention). Chainline: Chainline (approximate as BB centering and cranksets vary) 30t - 48mm on 3x cranksets and 49mm on 2xChainring bolts are required for 1x 104 x 30t - use 10mm bolts 104 x 32t uses 6mm chainring bolts If mounting a 104 BCD bashring you will need 8mm bolts which Wolf Tooth does not sell but are standard on most triple cranksets. Features: Material: Hardened and electropolished 416 Stainless Steel Use: MTB BCD: 104 Tooth Pattern: Wide/Narrow Weight: 30T: 72g; 32T: 88gBuy Wolf Tooth Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.