Item Type: ElectricBicycleControllerKitMaterial: Rubber and AluminumApplicable Handlebar: Approx. 22mm/0.9inController Box Size: Approx. 7.5x6x3.5cm/3.0x2.4x1.4in .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1A variety of applicable models, such as electric bicycles, electric tricycles and electric scooters, easy to install and use. 2The controller shell is made of aluminum alloy, which can protect the internal circuit, and has good heat dissipation to avoid thermal overload. 3The rubber material makes the throttle grip more comfortable and soft, and the hands are not tired after longterm riding. 4The handlebar grip are design according to ergonomics, professional manufacturing, stable characteristics and high reliability. 5Made of good quality rubber and aluminum materials, fit for 24V 250W electric bicycles.