Genuine NutriBullet part at a little higher price than the knockoffs! The packaging alone tells you that you are purchasing a quality part! The picture with the warning label with more writing is this part. Closed tightly, you see a significant gap. (that's a good thing) This is because the threads are thicker, more squared, and of a higher quality than the knockoffs. The other picture is of a knockoff. There is no gap (it just looks like there is due to reflection) I can't get my fingernail in there. It is closing on the cup,leaving the gasket a little loose, so THE GASKET LEAKS. I'm tired of this. Spend your money on Genuine Nutribullet parts! Take my advice, if you want to make your blades to last longer, NEVER overfill your cup! Blend your ingredients until they start to liquefy, then stop the blender, and take it out and turn it over. If it is ON or over the line, TAKE SOME OUT! Remember there is a significant amount in the top, so if it's on the line, it's too much! It should be 1/4 to 1/2 inch below the line. I do a pinky-width. Also, once a week, (more often if you use it more than once daily) remove the blade, clean the rubber seal with alcohol and Q-tips, and apply a little "Super Lube"(you can find it here on Amazon). Don't worry, it is food grade. I use it on many things. This will preserve your seal, and make it last much longer! Smoothie is NOT a lubricant! Once it gets past the seal, and into the bearings, it won't be long before the seal fails and the bearings burn up! That's how you have leaks, and the blade overheats leading to hot contents, over pressured cups, and potential bursting, especially if the contents are room temperature or higher. I also recommend that when you finish blending and turn the cup over, wet your finger, and touch the metal in the center of the rubber gear. If it sizzles, your bearings are shot! This is dangerous, stop using the blade, and get a new one. I always have one ready. If there is a leak I toss it and use my spare.
