For Ninja Blade Blade assembly diameter 335 85 cm Fit for Ninja Extractor Blade Assembly Model 307KKU Ninja Professional Blender BL660 1100w BL770 1500w BL740 BL663 BL663CO 30 BL665Q BL770W BL771 BL771C BL772 BL772Q BL773 BL773CO BL780BL770 30 BL773CO 30 BL771 30BL780 30 BL780CO 30 Please measure the diameter of the original blade and check the fins on the rubber shaft of the blade before purchase Quality Replacement and Dishwasher Safe The Extractor Blade is made of food grade high strength stainless steel safe and Durable Replace it and continue to blend your way to a healthier lifestyle of nutritious shakes smoothies nut butters and anything you wantYou can put it in your dishwasher for cleaning when finish blending Tight Seal Ring The rubber gasket Seal Ring is installed already in this replacement blade you can use the blade without any other operation Pls note that the gasket may be loose during transportation Please check it before use and make sure it is put tight into the replacement bottom blade New For Ninja Blender Replacement If your Nutri Ninja blender is leaking or getting noisier when blending it is time that you need a new replacement for the extractor blade Really recommend to check the bottom blade regularly and replace it every 6 months for good performance Wed like to address any issues or concerns you have Usage Tip Crush through ice and frozen ingredients pls use in 72 oz cups Blend personalized smoothies and juices in the 16 oz cups Our 6 fin blade only can fit for 16 oz cup Please classify correctly and use the cup for mixing otherwise it may damage the parts Check the gear of the bottom before use If its loosen please tighten it We dont claim these are original Nutri Ninja It is only used to prove the compatibility of accessories