The Yeah Racing Aluminum Desert Lizard Two Stage Internal Spring Shocks in Black are designed for RC model vehicles such as cars, trucks, and motorcycles. With a compatible scale range of 1:10 to 1:18, these shocks are suitable for electric-powered vehicles. The Yeah Racing shocks feature a two-stage internal spring design for improved suspension performance, making them a popular choice for hobbyists looking to enhance the handling and stability of their vehicles. The brand's reputation for quality and compatibility ensures that these shocks will deliver a smooth and controlled driving experience. Please see photos missing part