Feature: 1. It is recommend to check the bottom blade regularly and replace it every 6 months for good performance. 2. The rubber gasket is installed already in this replacement blade, you can use the blade without any other operation. 3. The extractor blade is made of food grade high strength stainless steel, safe and durable. 4. Replace it and continue to blend your way to a healthier lifestyle of nutritious shakes, smoothies, nut butters and anything you want. 5. Fit for Nutri Ninjia Extractor Blade Assembly Model 303KKU 307KKU 356KKU800 322KKU770. Only fits for 16 oz cups, 6 fins. Specification: Item Type: Blender Blade Material: ABS+Stainless Steel Color: As shown in the picture Product Size: Approx. 8.5x8.5x8cm / 3.3x3.3x3.1in Weight: Approx.158g/5.6oz Fitment: Fit for Nutri Ninja Extractor Blade Assembly Model 307KKU 303KKU 356KKU800 322KKU770 Fit for Ninja Professional Blender with Single Serve 1100w (BL660) Fit for Ninja Professional Blender 1000w (BL610) Fit for Ninja Mega Kitchen System 1500w (BL770) Fit for Ninja Professional Blender & for Nutri Ninja Cups (BL740) Fit for Ninja Professional Blender (BL663) Fit for Ninja Professional Blender (BL663CO) Fit for Ninja Professional Blender (BL665Q) Fit for Ninja Professional Blender (CT610) Fit for Ninja Professional Blender (CT610C) Fit for Ninja Professional Blender (NJ600) Fit for Ninja Mega Kitchen System BL770W, BL771, BL771C, BL772, BL772Q Fit for Ninja Mega Kitchen System with Slicing/Shredding BL773CO, BL773CCO Fit for Ninja Supra Kitchen System (BL780) Fit for Ninjia Blender BL770A 30, BL770 30, BL773CO 30, BL771 30, BL772 30 500w Fit for Ninjia Blender BL780 30, BL780C0 30 200w Only the models listed exactly as above is compatible. Only fit for 16 OZ cups. Package List: 1 x Blender Blade Note: 1. Please allow 12in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.