Features: Experience a seamless and efficient gear shifts with our mountain bike chainring. Feature a 3mm offset and narrow wide tooth designs for enhances chain retention on your bike setups. Craft from aluminum alloys, this direct mounts chainwheel is corrosion resistant and precisions engineered. Great for mountain biking enthusiasts and cyclists look for a upgraded to optimizes their ride performances and speed. This chainring disc offer stability and smooth shifting to keep you in controling during intenses mountain biking adventure. Specifications: Materials: Aluminum Alloys Color Optional: 2 Color are Available as Shown in the Picture. Package Weight: approx.130g Diameter: 13.4cm/14.2cm/15.0cm/15.50cm (Optional) Diameter: approx.13.4cm/5.27in Package Includes: 1Pc Bike Chainring note: Please allow 1-2cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!