[Compatibility]-The blender parts are compatible with for Auto-iQ 431 kku480, 575 kkud450; 900W food processor BL450-70, BL451-70, BL454-70, BL455-70, 1000W BL480,BL480D,BL480-70, BL480W-70, BL481-70, BL482-70, BL483-70,BL484-70. The model number # must be. If any number or is not the same, do not buy it. [Not Compatible with]-The blender blade is not suitable for the Ninja models listed: BL450-30, BL451-30, BL454-30, BL455-30, BL480-30, BL480W-30, BL481-30, BL482-30, BL483-30, BL484-30,BL660, BL663,BL740,BL770,BL771,BL773CO,BL780,BL820,BL830. Only fit 18.24, 32-ounce cups, not fitting 16-ounce blender cups. [6 Fins Blender Accessories for Ninja] - Made of high-quality stainless steel, the professional extraction blades are perfect for the Ninja blender to powerful vitamins and nutrients for tasting smoothies, freezing drinks and various sauces. The spare blade is pre-installed with a rubber pad for better sealing to avoid leakage. [2 Extra Rubber Seals]-Note that one washer is pre-installed already in the blade replacement when you receive it. An additional 2 gaskets are intended for replacement use in. Do not install an additional one when testing or using. One blade only needs one seal. They ensure that the blender cups and blades are properly assembled while the device is running. Color: as shownMaterial: PlasticPackage Contents:1 * Blender Blade2 * Rubber Seals1 * Cleaning Brush (Random Colors, Do Not Accept Specific Color)Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.