* ★Application--It is suitable for D3+/D3F [https://us.dyucycle.com/products/dyu-small-electric-bike-d3f]/D2F/S2 * ★Premium Material--It is made of aluminum alloy, this brushless controller is sturdy and durable. * ★Sensitive Control--This item is a brushless motor controller, it can provide steady speed and sensitive control of braking and direction changes. * ★High Performance--The wires and interfaces are durable and ensure low malfunction of long-time use. * ★Easy to Use-- The interfaces have instruction labels on them for your easy installation.