Replacement 6-Blade Attachment for Ninja Kitchen System 1100 Genuine Blade for Ninja 1100w 1200w & 1500 watt Kitchen Blender Systems Fits NJ600 NJ602 BL700 BL770 BL771 BL780 BL660 BL682 BL640 BL641 BL642 BL773CO and many others Does not fit BL500 For 72 ounce XL Pitcher Features Stacked Total Crushing Technology