Optimized Mechanical Reliability: This coupling set is designed to ensure a robust and durable connection between the motor and the bowl, guaranteeing efficient power transfer for your culinary preparations. Premium Materials: Made with a food-grade oil-resistant rubber casing and a lightweight yet rigid aluminum inner core, providing excellent resistance to everyday wear and tear. Quiet and Stable Operation: The ingenious design effectively absorbs shocks and vibrations, significantly reducing operating noise for a more pleasant user experience. Precision Fit: With exact dimensions (36 x 15 mm), these parts ensure a perfect fit on compatible shafts, eliminating mechanical play that could negatively impact performance. Simplified Installation: The included removal tool (115 x 25 mm) allows for quick and safe replacement without the need for additional tools, perfect for routine maintenance. Versatile Use: An ideal solution for home cooks, professional bakers, or culinary schools who want to maintain consistent performance without excessive cost. This product is sold by xiaosong on behalf of a third-party seller; it is a compatible product. None of the products offered in this store come with two batteries; they are powered by a single battery. Note: 1. Due to variations in lighting and screen settings, the product color may differ slightly from the images shown. 2. Please allow 1-3 cm measurement error due to manual measurement. 3. Please check that the size is suitable before purchasing. Thank you for your understanding!