[Compatibility]-- The parts are compatible with for Ninja with Auto-iQ 431KKU480, 575KKUD450; 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 letter is not the same, please 't buy it.[NOT Compatible with]-- The blade is not suitable for 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 fit 16-Ounce cups.[6 Fins Accessories for Ninja] -- Made of high Strength stainless steel, the pro blades are perfect for Ninja to deliver vitamin and nutrient extraction to you tasting smoothies, freeze drinks and sauces. The replacement blade is -installed with rubber washer for better seal to avoid leakage.[2 Extra Rubber Gaskets]-- Please note one washer is -installed already in the blades replacement when you receive it. Extra 2 Gaskets are for your replacement use in . Do not install the extra one when test or use. One blade need only one Gasket. Make the cups and blade are properly assembled time operating the appliance.Colour: as shownMaterial: plastic Contents:1 * Blade2 * Rubber Gaskets1 * Clean brush (random colors, 't accept the specified color)Only the above content, other are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.