Features: High Execution Planumberebog: Clip fit cycle chainring set features a 34T single speed plan with three screw directly attach structure, ensuring stable and smooth rotation with 10 tooth furrows and T25 screws for secure appendage.Premium Materialsecond: Produced from excellent aluminum alloy and search engine steel, this set proposals better hardness, durabilityAccuracy Engineehoadministrator: Utilizing cutting and anodizing processes, the chainring is thin yet strong, with a empty 24mm rod and bolted drill for precise and secure installation.Strengthened Agreement: Developed with a 47.1mm widened handle 37×24T standard English thread, it accommodates most 68/73mm bottom bracket skeletons and is consistent 9/10/11/12 speed arrangements.Permanent and Elegant: Available in black, rose, grape, and blue, collection combines aesthetic appeal with functional durability.Specifications: Product namemail: handle + central rod + tooth disc M13Substancemail: Aluminum alloy + chromiumoxide steel + presentation + steelColorebog: Black/Red//BlueCompatiblemail: 9/10/11/12 speedProcessecond: cutting, anodizing hardening care, permanent and against oxidationPackage Includes: (Set of ) Mountain positive and teeth single speed 34T tooth platenote: 1.: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item.