Direct mount Lola Round single chainring (No Spider) for Race Face Cinch cranks and BOOST framesFeatures:- Compatible: with 9,10,11 speed chains, SRAM Eagle 12 speed, KMC, Shimano HG+ chains- Compatible: RaceFace Aeffect cranks , Atlas, Turbine, SIXC, Next SL (+G4), Easton EC90L- Round- CNC machined from 7075-T651 aluminumSpecifications:- 30% longer teeth: Better chain retention, dirt expulsion and traction- Boost: 3mm