Feature: 1. Grip is made of comfortable and soft rubber material, which makes the grip more comfortable and does not get tired after long‑term riding. 2. The controller shell is made of aluminum alloy, which is sturdy and durable and can protect the internal circuit. 3. Easy to install and remove, without any professional requirements even though you are an amateur. 4. Good heat dissipation and can avoid thermal overload. Light in weight, so it's easy to carry. 5. This product 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