This arm serves as a crucial connector between the scooter rear body and the rear wheel, essentially attaching the rear wheel to the scooter. You'll find that each wheel requires two of these arms to secure it to the scooter body, so it's important to select the appropriate arm before proceeding with your purchase. This arm is compatible with the following scooter models: Dualtron Storm, Dualtron Storm Up, and Dualtron Storm Ltd. When you make your selection, you will receive one arm, so be sure to specify the side you require. This is a Genuine Minimotors Part.