SS101 Replacement Blade for Ninja Blender Accessories, 7-Fins Replacement blender Blade for SS351 SS401 SS151 SS300 SS350 SS351TGT CO351B SS100 SS101C CO101B, Ninja Blender Blade Replacement partsPlease confirm first that your Ninja Blender meets these three necessary conditions: 1,Your ninja blender blade is 7 fins blade(not 5 or 6 fins); 2,Please make sure your blender model is on our compatibility list. The model number (including the last two digits) must be exactly the same; 3,Your ninja blender cups is 18oz,24oz,or 32oz. Not 16oz; 4. One Gasket Rubber already in the blade, you just need to install it directly. This replacement blade only