RACE FACE chainring Direct Mount CINCH System Steel Narrow Wide blackWith the Race Face Direct Mount steel chainring, the service life must be expressed in years and not in months. Thanks to the anti-corrosion coating and the fact that it is made from hardened steel, you will be able to enjoy the chainring for a long time, even under the most adverse conditions. It is mounted directly on the Race Face crank arm with CINCH mount . The CINCH system makes assembly easy with the help of a cassette puller. In order to be able to do without a chain guide, the teeth are manufactured similar to SRAM's X-Sync system and the use of rear derailleurs with significantly higher cage tension is recommended, such as SRAM Type2 or Shimano Shadow+. The chainring is compatible with 10, 11 and 12-speed mountain bike drives.Technical specifications:Area of intended use : MTBMaterial: steelTechnology: Narrow WideDirect Mount Standard: Race Face Direct MountNumber of teeth: 28, 30 or 32Compatibility cranks : Race Face cranks with CINCH systemCompatibility chain: 10-speed , 11-speed or 12-speed (SRAM Eagle)chain line : 51 mmOffset: Standard / BoostAdjustment options: noneRange (ovalization): -Timing (force application): -Color: BlackWeight according to the manufacturer: 135g (28 teeth), 146g (30 teeth), 158g (32 teeth)Weight weighed: 128g (28 teeth)