Features： 1、ALUMINUM ALLOY: Controller shell is made of aluminum alloy, wear resistant and durable, long service life. 2、HEAT DISSIPATION: Electric bicycle controller set can protect the internal circuit, good heat dissipation and avoid thermal overload. 3、APPLICABLE OBJECTS: Electric bike brushless controller set is applicable to electric bicycle, electric tricycle, electric motorcycle, with a wide range of applications. 4、RUBBER GRIP: The grip is made of comfortable and soft rubber material, which is comfortable to hold and not tired for long time riding. 5、SENSITIVE CONTROL: Electric bike throttle grip set can provide stable speed and sensitive braking and steering control with working performance. Specification： Item Type: Electric Bicycle Controller Set Material: Aluminum Alloy, Rubber Turning Handle Diameter: Approx. 22.2mm/0.87in Controller Parameters: Rated Power: 350W Undervoltage: 21.5V Package List： 1 x Controller 1 Pair x Throttle Grip 1 x Charging Interface 1 x Electric Door Lock 2 x Key