Features: Enhances your biking experience with the motor bikes gear adapter, designs for drives motors, offering a great solution for various bike models. Craft from aluminum alloy, this chainring spiders adapter is light weight and quality, ensuring stable performances even in challenging environment. Great for cycling enthusiasts seek to modify their bikes, professional bicycles machinists requiring safe part, and manufacturer look for high performances accessories. Perfect for bike assembly and modification projects, long distances ridings, and competitive event, ensuring your electric bike system remain stable and efficient across various terrains. With its precisions machining and fashion designs, this adapter enhances ridings efficiency by reducing frictions, making it a must having component for cyclists. Specifications: Materials: Aluminum Alloy Color: As The Picture Shows Package Weight: approx.96g Size: approx.10.4cm/4.09in (More Size Detail, Please See Picture.) Package Includes: 1Pc Chainring Adapter 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!