Usage Tips:PLEASE CHECK: Before buying, please check your existing by calculating the fins. Please check the number of your existing . It should be 6 fins and 4.1 inches./It should be 7 fins and 4.1 inches. BEST REPLACEMENT: If your Nutri Ninja blender leaks or becomes louder during mixing, it's time to replace the extractor blade. It is really recommended to check the bottom blade regularly and replace it every 6 months to get good performance. CONVENIENT AND FAST: The blade is made of high-quality stainless steel, which can easily crush fruits, vegetables, superfoods and protein shakes into a delicious, smooth texture. After mixing, you can put it in the dishwasher for cleaning. THE CONTENT INCLUDES- 1 x bottom blade replacement parts. Also please note that the rubber gasket may be loose during portation. Pls check it before use and make sure it is put tight into the replacement bottom blade. COMPATIBILITY: Our 6 fins blade for Nutri Ninja blender replacement parts is only suitable for 900W BL450-70, BL451-70, BL454-70, BL455-70; 1000W BL480-70, BL480W-70, BL481-70, BL482-70, BL483-70, BL484-70. / COMPATIBILITY- Our 7 fins blade for Nutri Ninja blender is only suitable for BL2012/ BL2013/ BL480/ BL480D/ BL481/ BL482/ BL486CO/ BL487/ BL487A/ BL488W/ BL490/ BL491/ BL492/ BL492W/ BL640/ BL641/ BL642/ BL642W/ BL642Z/ BL680A/ BL682/ NN100A/ NN101/ NN102.it is only used to prove the compatibility of the accessories. Colour:Black+silver Material:plastic Package Contents: 1 x tool holder 1 x sealing ring 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.