Our premium 1X Easton compatible, Direct mount Oval chainring is designed for Easton EC90SL cranks specifically. Super stiff, mud optimized narrow-wide chainring is a Perfect choice for Cyclocross and Gravel setup. Eagle 12spd compatible. Size (Weight): 38T (94g) 40T (101g) 42T (108g) 44T (109g) 46T (120g) 48T (122g) Compatibility:Easton Cinch(tm) EC90SL cranks and RaceFace Cinch cranks. Eagle 12spd compatible. Material: CNC machined 7075 Txxx Aluminum. Long-lasting construction Mounting: Direct Mount Ovality: Optimized to each size separately. Range: 10.2-12.1% and Timing of 110.5-112.3° after TDC (top dead center) Patent Pending Advantages of our special Direct mount chainrings: Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically Designed to handle mud and grass with easy Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not feel the oval shape at all Reduces stress on knees