Feature: MOTOR BRUSHED SPEED CONTROLLER:The motor brushed speed controller's shell is made of aluminium alloy with groove design, which can protect the inner circuit and good for heat dissipation to avoid thermal overloading.COMFORTABLE GRIP:The grip is made of comfortable and soft rubber material, which makes the grip more comfortable and does not get tired after long term riding.EASY TO INSTALL:Easy installation, fit for 500W 12V brushed motor.SENSITIVE CONTROL:Providing steady and sensitive control of speed,great heat dissipation and can avoid thermal overload.APPLICATION:3speed universal handle, it can be used for electric bicycles, electric scooters, and electric tricycles. How to Use: The plastic port of the handle is inserted into the handle interface on the top of the controller to realize the handle function. Specification: Item Type: Twist Handle Material: Aluminum + Rubber Weight: Approx. 442g / 15.6oz Package List: 1 x Controller 1 Pair x Twist Handle