Compatible models-BL480, BL480c, BL488, BL488W, BL640, BL641, BL641C, BL642, BL642W, BL680A, BL681C, BL682. confirm that your blender needs 7 fins spare blade with purchase. (Only suitable for 18/24/32 oz cups, not 16 oz)Advantages-Made of food-grade plastic and stainless steel, protect. The rubber gasket is perfectly sealed and does not leak. Quality in parts, integrates blades for easy grinding of food. Muti-Grinds vegetables, fruits, milkshakes into easy-to-make smoothies, mashed meats, and baby paste. Help you save time and energy. Easy to use and clean - The gasket is pre-installed in the spare blade, you can directly install it on the blender without additional operation. Cleaning is easy, just wash the blade with soap and water. Note: The rubber seal in the bottom blade may loosen during the