24V 250W Electric Bicycle Controller Kit, Blue Crystal Twist, Bike, 3.0X2.4X1In. Product Details Feature: 1. A variety of applicable models, such as electric bicycles, electric tricycles and electric scooters, easy to install and use. 2. The controller shell is made of aluminum alloy, which can protect the internal circuit, and has good heat dissipation to avoid thermal overload. 3. The rubber material makes the throttle grip more comfortable and soft, and the hands are not tired after long?term riding. 4. The handlebar grip are design according to ergonomics, professional manufacturing, stable characteristics and high reliability. 5. Made of good quality rubber and aluminum materials, fit for 24V 250W electric bicycles. How to Use: The plastic port of throttle grip is inserted into the upper throttle grip interface of the controller to realize the handle function. Specification: Item Type: Electric Bicycle Controller Kit Material: Rubber and Aluminum Applicable Handlebar: Approx. 22mm/0.9in Controller Box Size: Approx. 7.5x6x3.5cm/3.0x2.4x1.4in Package List: 1 x Controller 1 Pair x Throttle Grip A variety of applicable models, such as electric bicycles, electric tricycles and electric scooters, easy to install and use. The controller shell is made of aluminum alloy, which can protect the internal circuit, and has good heat dissipation to avoid thermal overload. The rubber material makes the throttle grip more comfortable and soft, and the hands are not tired after long?term riding. The handlebar grip are design according to ergonomics, professional manufacturing, stable characteristics and high reliability. Made of good quality rubber and aluminum materials, fit for 24V 250W electric bicycles. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.