The Ninja blender replacement parts is perfect fit with spb-600ca, bfp-10, bfp-10ch, bfp-703, cb-5, cb-6, cb-7, cb-8, cb-9, fpb-5, fpb-5c, fpb-5pc, sb-5600, spb-10, spb-10ch, spb-5, spb-6, spb-7, spb-7bch, spb-7ch . Ninja blender replacement parts use food grade steel blender knife & rubber gasket.You can rest that the blender replacement parts are in contact with food. Blade is sharp enough to crush ice, milk, fruit, meat, protein powder. High-quality rubber ring can prevent leakage when the mixer is in operation Ninja blender blades 7 fin is the replacement blades for , it enables your juicer to be used again, very suitable for all your mixing and mixing needs, effortlessly blending fruits and vegetables and protein shakes are crushed into delicious, smooth textures. No other tools needed during installation.Just use the matched Iron hook to install the Gasket Rubber. 1. Your motor base must be 7 fins. The Replacement Blade can't fit all the 7 fins blender's motor base: there are too many models of blender blade, if the last two digitals(not part of model #) or any character is difference, please don't purchase it 2. Your blender model must be identical with our stated model.ONLY COMPATABLE WITH 7 fins model Auto iQ BL2012, BL2013, BL480, BL480D, BL481, BL482-30, BL486CO, BL487, BL487A, BL488W, BL490, BL491, BL492, BL492W, BL640, BL641, BL642, BL642W, BL642Z, BL680A, BL682, NN100, NN100A, NN101, NN102, BL2012. NOT FIT FOR BL660, BL663, BL740, BL770, BL771,BL773CO, BL780, BL780,BL820,BL830,BL450,BL451-70,BL454-70,BL482-70. Please check your model carefully before purchasing. Colour: black Material: plastic + stainless steel Package Contents: 1 x knife holder Only the above package content, other are not included. Note: Light 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.