The RABACONDA Spindle for the DIRT tire mounting device features a diameter of 12mm and comes with an 18mm adapter sleeve. Specifically designed to ensure robust performance, this spindle is essential for any dirt bike tire changing needs. For comparison, the original RABACONDA DIRT BIKE spindle has a diameter of 20mm and the adapter sleeve has a diameter of 24mm. Whether you're a professional mechanic or a dedicated hobbyist, this spindle is a reliable addition to your tire mounting toolkit. Its precise engineering and durable materials make it ideal for frequent use in demanding environments. Enhance your workshop's efficiency and accuracy with this indispensable tool from RABACONDA, a trusted name in tire mounting solutions.