Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does this cup fit for all Oster bottom cap and blade??
Document: This product is similar to what I already owned. The bottom part has the numbers "131084". I was actually expecting to receive just the clear plastic cup and the black cover/lid. Much to my surprise however, I got a complete "SMOOTHIE KIT Blender Accessory" which includes an ice crusher blade, 2-sealing rings and a jar bottom cap. I am certainly happy with this purchase.
I have used this cup every day since receiving it. I don't use the cap as my shakes are pretty thick. It arrived with a new blade, washer and screw cap which was a surprise.
Compared to other smoothie making setups, this seems to be the most economical since we use our powerful Oster blender. I think it could come with the option to buy another go-cup and cap, for a his and hers set. But I don't see paying over $10.00 for that.
The compact tapered jar helps the blade pull everything to be pulverized.The plastic cup is thick and very sturdy and has recycling #2 on the bottom. This is the same stuff they make milk jugs and butter tubs. I checked, it's considered food safe and almost no risk of BPA specially most items prepared will be cold or frozen.
The old #6848-000-950 Blend-N-Go Oster Cup was DOUBLE WALLED to keep your drinks cold but this Cup sweats, is cold on your hands and the shakes/smoothies get warm and melt right away. I am surprised that Oster hasn't improved on the old one that fit all the Oster Blenders while keeping it double walled for insulating value. Come on Oster!
Maybe a fair comparison would be the original, really tough Tupperware thickness, though even that I can bend a little bit, and this cup I cannot. It's really sturdy, so don't let that idea deter you. I admit that I haven't used the lid for travel purposes yet and so can't comment, but the blade, rubber gasket, and cup all fit perfectly together, blend beautifully, and then I just pop off the blade and gasket, pop in a straw, and I'm set!
Step aside Magic Bullet, NutriBullet and fruit ninja or whatever else. This blending cup with included blade is the perfect companion to your Oster blender. I almost bought the $99 NutriBullet but decided to give this cup a try. If you have an Oster Blender, you must get this cup.
I ordered this blender cup with a vision in mind of me making endless green smoothies and kick starting my new healthy lifestyle..Now I just use it to blend together random hair product concoctions.It is effective. However, be 'fore warned.. this cup does not have a motor to blend. It is literally just a cup with a blade that you use by putting it on your Oster blender, that you should already own.
I really do love this, which is apparently a 5-star rating. I was really only looking for a replacement rubber ring for my Oster blender, when I came across this. For a very reasonable price, I got TWO rings, a new blade and the cup. I like to make smoothies, but it was a pain using (and washing) the whole blender, then pouring it all into another cup.
This was a replacement for the same item which I inadvertantly punctured a hole in and had to get a new one. I thought it was coming with only the cup, but inlcuded was the bottom piece that fits into the blender and 2 rubber gaskets! I love the ease of use, and it's easy to clean.
Answer: Well, I can't speak for *all* but my understanding is that most Oster blenders use the same sized cap and blade. If you have a nonstandard Oster line blender, then that's of course another matter. If you took your current cap and blade down to a local Walmart or target and it fits the standard osters, then you should be good to go.