The Losi Nascar & Arrma Grom vented RC motor break-in stand with a push-on cooling fan is a high-quality accessory designed for 380 size brushed RC motors. Compatible with cars and trucks, in 1:18, 1:16, 1:14, and 1:12 scale, this stand provides a convenient way to break in new motors while keeping them cool during during the break in process. The vented design allows for optimal airflow, while the push-on cooling fan ensures efficient heat dissipation to get the best out of your brushed motor. Perfect for RC enthusiasts looking to maintain or increase the performance of their vehicles, this motor break-in stand is a must-have accessory.