PLEASE CHECK: Before purchasing, verify your existing blade by counting the fins. Your current blade should have either 6 fins and measure 4.1 inches, or 7 fins and measure 4.1 inches. BEST REPLACEMENT: If your Nutri Ninja bl leaks or becomes louder during operation, it may be time to replace the extractor blade. It is recommended to inspect the bottom blade regularly and replace it every 6 months for optimal performance. CONVENIENT AND FAST: The blade is constructed from high-quality stainless steel, designed to effectively blend fruits, vegetables, superfoods, and protein shakes into a smooth consistency. After use, the blade is dishwasher safe for easy cleaning. PACKAGE CONTENTS: 1 x bottom blade replacement. Please note that the rubber gasket may become loose during shipping. Inspect before use and ensure it is securely fitted into the replacement bottom blade. COMPATIBILITY: This 6-fin blade is compatible with Nutri Ninja models 900W BL450-70, BL451-70, BL454-70, BL455-70; 1000W BL480-70, BL480W-70, BL481-70, BL482-70, BL483-70, BL484-70. The 7-fin blade is compatible with models BL2012, BL2013, BL480, BL480D, BL481, BL482, BL486CO, BL487, BL487A, BL488W, BL490, BL491, BL492, BL492W, BL640, BL641, BL642, BL642W, BL642Z, BL680A, BL682, NN100A, NN101, NN102. Compatibility information is provided for reference only. Color: Black + Silver Material: Plastic Package Includes: 1 x Tool holder 1 x Sealing ring Note: Light reflection and display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.