ITEM NAME:Bike Power Pedal Assist Sensor Cycling Accessories Bicycle Parts Bicycle PA D3Q7 Bike Power Pedal Assist Sensor Cycling Accessories Bicycle Parts Bicycle PA D3Q7 After fine processing, it is well assembled, durable, waterproof and durable. Efficacy: The 1:1 auxiliary sensor is perfect for pedal-assisted electric bicycle drive systems, saving you work while pedaling, resulting in a constant and smooth pedal motor power supply. Scope of application: Applicable to almost all electric bicycles on the market, small size, light weight, durable, shockproof, anti-corrosion and dustproof. colour:black Material:plastic Package Contents: 1* Sensor