Only chain guides on the market that are designed specifically for Oval chainrings Unique adjustable chainline from 48-53mm making it compatible with a wide variety of frames Tool free adjustments - replace and adjust chains without having to remove the guide Compatible with all 1x10, 1x11, and 1x12 drivetrains and oval rings 26-34T or 28-36T round chainrings Boost compatible Titanium hardware 7075/Polymer Black 22.2g ISCG05UPC/EAN/GTIN: 5110846001804