Description: Bike Crank Set: This bicycle chainring crankset supports gear speeds ranging from 7 to 12 speeds,suitable for road bikes, mountain bikes, folding bikes, and other bicycles.175mm Crank: The crank arm length is 175mm,which is lightweight and reliable shifting, making it ideal for various cycling conditions.Material: This bike crankset is made from stable aluminum alloy material, and can withstand tough terrains without rusting or wearing out easily. It's also waterproof to ensure long term use performance.Good Accessories: This bicycle crankset boasts an outstanding axle and bottom bracket design that enhances overall durability while ensuring security and reliability during your rides.Package Includes: Each purchase comes with a complete set that includes 1 crank arm (175mm), 1 axle, and 1 single disc, providing everything you need for an upgrade or replacement. Specification: Material: Aluminum Alloy Size Chart: Crank: 17.5cm/6.89inch Package Includes: 1 Set 175mm Crank Set Note: Please allow slightly errors 1-2cm differences due to manual measurement.