PLEASE CHECK: Before purchasing, please check your existing blades by counting the fins. Ensure your current blade has 6 fins and measures 4.1 inches. BEST REPLACEMENT: If your Ninja bl leaks or becomes louder during operation, it may be time to replace the 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 made of high-quality stainless steel, effectively blending fruits, vegetables, superfoods, and protein shakes into a smooth, delicious texture. After use, the blade is dishwasher safe for easy cleaning. PACKAGE CONTENTS: 1 x bottom blade. Please note that the rubber gasket may become loose during shipping. Please check before use and ensure it is properly installed in the replacement bottom blade. COMPATIBILITY: This 7-fin blade is compatible with Ninja bl 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. This information is provided solely to confirm accessory compatibility. Color: Black + Silver Material: Plastic and stainless steel Package Contents: 1 x tool holder, 1 x sealing ring Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.