Features:

High intensity PVC shell, prevent from cracking and not easy to fracture. 

High performance chip provides quick response speed and stable transmission performance. 

Effectively protect your electric bike from chain grinding and cassette breaking. 

Help to detect the action about shifting gear very quickly and shut off the power. 

Compatible with hydraulic and mechanical brakes, fits for rear derailleurs and internal gear hubs. 
Replacement for Bafang BBS01 BBS02 BBS03 BBSHD Mid Drive Motor.

Specification:

Material:Plastic 
Standard: USB2.0

Length: 58cm / 22.8in 
Weight: 20g / 0.7oz

Package List:

1 * USB Programming Cable