· 6 Fins | Male Version FITMENT: Specially designed for BL660, NJ600, BL610, BL663, BL665, BL740, BL780CO, BL770, BL771, BL772, BL773CO, BL770W, BL780 (Please ensure your machine model matches our compatibility list exactly. Only fit blade assembly diameter 3.35"/ 8.5 cm. Only fit 16oz single-serve cups).· SAFE AND HEALTHY: Made from BPA-free and food-grade materials, ensuring your safety and peace of mind. Dishwasher-safe for hassle-free cleaning, saving you time and energy. Built with high-quality standards for smooth and steady operation, ensuring years of reliable use.· LEAK-PROOF DESIGN: Equipped with 9mm food-grade rubber seals to prevent leaks and ensure airtight storage. Replace your old or broken blade assembly and experience a whole new blending experience.· Complete Kit: This all-inclusive package includes 1x replacement blade assembly, 2x replacement gaskets for the blades, 1x stiff brush, 1x sponge brush and 1x metal hook. It's a must kit you need for a seamless blending experience with your Nutri Ninja blender.· Pre-Sale & After-Sale Service - Unsure about your model? Contact us before purchasing. If you find the product incompatible or face any issues, reach out to us instead of leaving a review. We provide a one-year manufacturer warranty and will resolve your issues within 24 hours to ensure a satisfactory shopping experience.