Features： 1、Stable Performance: Both the controller and switch can provide stable speed control, allowing users to have better and comfortable operation. 2、Heat Dissipation: The housing of controller can provide protection to the internal circuitry with heat dissipation, thus avoiding security problems caused by thermal overload. 3、Easy Installation: Our speed controller and speed switch are very light weight and very easy to install, even for novices. 4、Aluminum Alloy Housing: The housing of our speed controller is made of aluminum alloy, which is very high hardness and can be achieved long term use. 5、Wide Application: Our speed controller speed switch set is widely applied to electric bikes, electric tricycles, electric motorbike, etc. Specification： Item Type: Motor Speed Controller Set Material: Aluminum alloy Controller Rated Power: 250W Package List： 1 x Controller 1 x Speed Switch