Feature: 1. Fashionable appearance, gorgeous shape, strong axial strength, strong compatibility. 2. Stylish design, the crank has high strength and deformation resistance, can be used for a long time, very practical and convenient. 3. The crank set is made of high quality aluminum alloy, which is lightweight and does not add weight to the bike. It is easy to carry without any burden. 4. The crank arm length of our bicycle accessories is 170mm/6.7in. It is a perfect replacement for bike repair, compatible with many bike models. 5. The crank fits closely with the plate, avoiding looseness due to wear and tear during riding, effectively enhancing the safety and comfort of riding. 6. The blades are all made by CNC, with distinct layers. The teeth vary in size and thickness. This is to make it easier to detangle when changing speed, not a quality problem. Specification: Condition: 100% Brand New Item Type: Integral Single Speed Crank Set Material: Aluminium Alloy Color: As Pictures Shown Model: ZK-22 Quantity: 1 Set Tooth Plate: 38 T Type: Contain Bottom Bracket Bottom Bracket Length: 88mm/3.5in BCD: 104mm/4.1in Size: 170mm/6.7in Application: for Medium-Locked Hub into a 44mm/1.7in Hole Distance Six-nail Disc Integral Single Speed Crank Set. Package List: 1 Set x Crankset Crank Arm1 x Bottom Bracket2 x Accessory