Jiankun Road Folding Bike 2×8/9/10 Speed Crankset 50-34T 53-39T Hollowtech Chainwheel BCD 110mm 130mm Bottom Bracket Compatible Shimano Sora 105 FC-R3000 FC-4700

Option: 
1, Crankset only(50T): Crankset 50-34T
2, Crankset(50T) + BB: Crankset 50-34T,come with Jiankun original bottom bracket
3, Crankset only(53T): Crankset 53-39T
4, Crankset(53T) + BB: Crankset 53-39T,come with Jiankun original bottom bracket
——————————————————————————
Item 1: Crankset
Brand: Jiankun
Color: Black
Speed: 2×8/9/10 Speed
Chainring: 50-34T / 53-39T
50-34T BCD: 110mm
53-39T BCD: 130mm
Arm length: 170mm
Bottom bracket type: Hollowtech
Weight: approx 1100g
——————————————————————————
Item 1: Bottom bracket
Brand: Jiankun
Type: Hollowthch
Material: Aluminum+ABS
Shell thread: BC1.37" x 24T
Shell width: 68-73mm
Sealed cups keep out dirt and water
Maintenance free, easy installation