Warm Prompt Please confirm it is 5 Fins and 3.15in/8.5CM diameter becompatible withe purchase. Please measure the base fins number and size of the original blade.Replaceable Model The 5 Fins blender blade fit compatible with Ninja blender models: QB3000, QB3000SSW-30, QB3000QR-30, QB3001SS-30, QB3000QBK, QB3004, QB3005.Not Compatible 7 Pins/Fins, 6 Pins/Fins, If your blender model starts with Bl2, Bl4, Bl6, Bl7, BL8, BN, NJ, NN, CT, QB, this blade is not compatible with your blender.Tips:1.Dont overfill To avoid overflow, do not add ingredients that exceed the maximum fill line.2.Do not run the blender compatible with more than 4 minutes at a time to avoid overheating.3.Warm reminder that your ninja blender blade is best to be replaced every 6 months. (Specific according to your frequency of use)4.Please check whether the bottom gear is loose becompatible withe use. If it is loose, please tighten it.5.Make sure the rubber gasket is glued to the bottom blade to avoid leakage.Statement:The 5 fins Blender blades replacement part we sell are not original product. The design and production concompatible withm to the original standard. Its function can reach the original level. The brands mentioned above are only used to prove compatibility.Product Specifications:Item Type: 5 Fins Pro Extractor Blade Assembly compatible with Nutri Ninja blenderBlade Size: 3.15 in (Diameter) x 3.1 in (Overall height)Blade Weight: 0.88lb (2PCS)Blade Shape: Cross BladeColour: BlackMaterial: plastic + stainless steelPackage Contents:1 x base3 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.