This fits just like the original that I broke when we moved. I have an older 18 speed Oster blender that I bought 12-15 years ago, and it’s a beast, blends anything, so I was really happy that this works with it, as I was not eager to get a new blender. The old lid from my other pitcher even fits, but they sent a lid with it, so that was nice.I couldn't find a 5 cup Oster brand jar for my years old Osterizer 6650, so I bought a different manufacturer part. It looked right but the bottom would not screw on. I got a refund and found this larger 6 cup round Oster brand jar that was rumored to fit. It does fit, perfectly.Excelente producto a muy buen precioThis only comes with the glass and the cap but it fit my Oster 6 cup perfectly.I'm so glad I bought this new pitcher to replace my broken one. This one fits perfectly. I'm happy I didn't have to spend the money for a whole new blender.Perfect fit of this product for replacement price could be a little bit betterI accidentally broke my sisters so I purchased this as a replacement. It works great! It is smaller then the one she had that came with her blender but that was likely my problem and didn’t read the fine print enough. It did come with great packaging which was something I was worried about. It didn’t have any cracks or signs of damage.I broke my blender jar and needed a replacement. This fits perfectly. It also came in the original packaging. This was a really good replacement.Good conditions and on time deliveryThe jar, lid, seal and blade parts fit my 60+ year-old Osterizer blender perfectly. It's nice to have and use a product from the not-so-distant past when stuff was built to last and last. Kudos to Osterizer for building a top quality blender and sticking to standard, readily available replacement parts. Good to go for another sixty years!As others have remarked, it is a value add that Osler continues to use standard connectors for their blender parts. This allows for long term maintenance, and makes the more expensive units a safer buy over other makers who allow theirs to become obsolete.The jar came well packed in two boxes, no risk of damage. The only negative is that it is a bit costly for what it is (a glass jar..), but if the blender unit is worth keeping it is still better than a full replacement.Llego muy bien enpaquetado y dentro en su paquete original, todo embono muy bien con las navajas del anterior vaso que se rompió muy grueso y mejor muy satisfecho (en La foto el vaso ya está sucio de que luego luego lo estreno mi esposa)Recieved an open box item...obvious signs of previous use...disgusting..I'm an experienced problem solver in Amazon frustrates me when I see associate resell a used item....that could go to warehouse deals not regular sellable....