DESCRIPTION
Material: Aluminum Alloy
Color: Black / Silver
Chainring: No chainring
Arm length: 170mm
Bottom bracket type: Diamond hole (Suqare taper)
Weight: approx 450g/pair
Pls make sure the interface of your original crank arm is "Diamond hole" not "Square hole"
Compatible with E-bike mid drive motor, like BAFANG mid drive motor BBS01, BBS02, BBSHD and M200..