Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Does the blades come with the black base and the bottom rubber grip?
Document: Poor quality the prongs being rubber do not grip on the hard plastic prongs of the actual bullet machine. These blades do not work with the bullet base.
If you enjoy plastic and rubber shards in your smoothies, I highly recommend these blades. Perhaps its the black plastic between your teeth that you're looking for? You've found the right product. If you're hoping to litter your Magic Bullet with liquified nutrients, you'll have the sticky mess you're looking for on the first use!But seriously, one o-ring broke and shredded into our first smoothie, taking shredded black plastic with it. This caused a lovely spinach smoothie to leak all into the base of the blender.
Very poor quality. The bottom gear that engages to the gear on the base is made of a soft rubber material. Why make a gear out of rubber??! After 3 uses each, the cheap soft rubber gears were completely stripped. Avoid this and look elsewhere. Price was too cheap to pass up initially, but seriously avoid the frustration and look eleswhere.
These are not the food cross blades that come with the magic bullet! These are the 'ice chip' blades - much taller than the food cross blades. After 2 uses, the rubber seal on one of them broke - so far the other one is still ok. They work with the magic bullet OK.
I think these blades match the quality of those of the original Magic Bullet. We use the Magic Bullet daily and the biggest problem we have had is when one of the three lock tabs on the mug breaks off and stays lodged in the base. If you don't notice that then the blade and mug will not set properly in the base which causes the rubber impeller of the blade to get chewed up by the base's impeller. Of course a little more operator attention would help.
the bottom to hold the blade came out and the rubber seal was not sitting properly compare to the original I had
I bought these to replace the original that came with my Magic Bullet. Just like the original, the rubber teeth on the bottom wore down, even after two uses, making them useless. I will definitely be returning my Magic Bullet.
First time tried to use one the replacement blade, the rubber seal on the inside got wrapped around the base of the blade. Sort of junky.
I would not purchase this item through this buyer. Both broke within days!!! The rubber pieces that allow the blade to catch to the Magic Bullet base seem to disintegrate.
I am completely dissatisfied with the crossblades. The Top would not tighten up on the cup. It kept turning and turning. I tried it anyway when making a smoothie and the juice kept coming up. Then my daughter tried the crossblade on another cup. It tightened up on that cup but then it would not blend instead my magic bullet base started smoking and also I saw some black dust that emerged from the base which I no came from the crossblade. So I no longer wish to use those crossblades.
Answer: Hi Lesley, this comes with everything you see pictured. The black screw top and blades, and includes the rubber gasket that is in the inner part of the area the blades are in. I do not know how to describe it... but if you have the magic bullet blender base, and the cups themselves, then this is all you need -- just screw it on to the cups after you fill them with whatever needs to be blended, and then stick on the blender base and blend away :)