[Compatibility]-- The blender parts are compatible with Nutri Ninja with Auto-iQ Pro food processor 431KKU480, BL455-30, BL481-30, BL487, BL487A, BL487T, BL491, BL492, BL492IS-30, BL494, BL640-30, BL641-30, BL642-30, BL680A-30, BL681A, BL681C, BL682-30, BL682QT-30, BL685, BL685-30, BL687CO-30, BL2012, BL2013, BN800, BN801, NN100, NN100A, NN101, NN102, NN210, CT680SS, CT680CO2SS. The model number must be identical. If any number or letter is not the same, please don't buy it.[NOT Compatible with]-- The blender blade is not suitable for Ninja models listed below: BL451-70,BL454-70,BL482-70,BL660,BL663,BL740,BL770,BL771,BL773CO,BL780,BL820,BL830. ONLY fit 18,24,32-Ounce cups, NOT fit 16-Ounce blender cups. Check carefully the motor base of your blender model and your original blade both have 7 fins to fit in as in the picture before purchasing[7 Fin Blender Accessories for Ninja] -- Made of high Strength quality stainless steel, the pro extractor blades are perfect for Ninja blender to deliver powerful vitamin and nutrient extraction to provide you tasting smoothies, frozen drinks and various sauces. The bullet replacement blade is pre-installed with rubber washer for better seal to avoid leakage. BPA Free and dishwasher safe.[Extra Rubber Gaskets]-- Please note one washer is pre-installed already in the blades replacement when you receive it. Do not install the extra one when test or use. One blade need only one Gasket. Make sure that the blender cups and blade are properly assembled every time before operating the appliance[Package Included]-- 2 x Blade Replacement with Gasket Ring pre-installed already in the blade assembly. 4 x Rubber Gaskets, 1x Brush. Total 7 pieces for your Ninja accessories. Blade Size: Diam 3.9 inch / 10 cm X Height 3.15 inch / 8 cm.Tips for Usage:1. Note: The blade assembly is sharp, please handle itcarefully. When handling the blade, always hold by the base of it.2. Make sure that the accessories are properly installed before operating the equipment.3. Do not try to sharpen the blade.4. Do not process hot food or hot liquids.5. Do not overfill. Do not add ingredients past the Max fill line.Color as shownMaterial: plastic + stainless steelPackage Contents:2 x 7 blade holder4 x sealing ring1 x cleaning brush (random color Do not accept designation)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.