Features: Engineered with light weight aluminum alloy, this bikes crankset optimizing pedaling efficiency in long distances rides and hill climbing while maintaining durability. Its foldable design for easy storage in backpacks or bike frames, paired with precisions gear systems to minimize power loss during high speed cycling. Ideal for city commuters, cyclists, and beginners needing frequent adjustments, it supports 9-12 speed chains and fits most road/folding bikes without compatibility issues. Perfect for mountain trail, highway sprint, or daily travel, the tool frees quick releases mechanism enables quick installation to adapt quickly to diverse terrains. Combining portability, ergonomic engineering, and wide adaptability, this crankset redefines cycling performances upgrades for enthusiasts. Specifications: Materials: Aluminum Alloy Color: As The Picture Shows Styles: (Optional) 3 Styles are Available as Shown in the Picture. Size: approx.17x11.6cm/6.69x4.56in Package Includes: 1 Set of Bicycles Crankset note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!