Best Accessories / Replacement Parts FOR Nutri Ninja Blander- Pro Extractor Blades Assembly FOR Nutri Ninja,The Pro Extractor Blades Assembly is compatible with Tritan Nutri Ninja cups, Stainless Steel Nutri Ninja Cups and the XL 48 oz. Multi-Serve Nutri Ninja Jar. Compatible with:900W/1000W NUTRI NINJA PRO BL450 30/BL 456 30/ BL455 30 AND 900W Nutri Ninja Pro Deluxe BL451 30 Works with: BN750, BN750C, BN751, BN751C, BN800, BN800C, BN801, BN801C, DB751A BL910,AMZ493BRN,AMZ012BL Note: 1. The rubber garsket in bottom blade maybe loosened during transportation. Before using the bottom blade, please check the rubber garsket and be sure it is put snugly into the bottom blade. 2. This bottom blade applies to many models, before purchasing, please check your machine, if 7 fins gear and 4inches, this will fit it. it can't fit 6 fins Gear