Bought this as a second jar for my blendtec. The lid is different from my original. I turned it to smoothie and busied myself with other tasks. It made a horrible noise and the tiny clear top part of the lid FELL into the blades part of the jar. This would never happen with my original lid as the design is better. The clear plastic part is large. It really chewed it up. Clear plastic knob part of lid is way too small.
I bought my Blendtec blender many years ago from a roommate leaving to move overseas and for the last few months, it had been making a HORRIBLY loud sound. I was afraid the base motor may have finally kicked the bucket after multiple years of daily smoothies. Not wanting to spend $$$$ on a new blender or add mine to the e-waste trash pile, I bought this new jar. Lo and behold, it turns out the blades on the old jar were the culprit of the loud noise! Now my blender runs much quieter and the new sharp blades quickly blend ice and more. The updated shape also does a better job at getting all the ingredients so I don't have to use a spatula constantly to mix up dryer recipes.
I have my machine from 2010 to this day I have for many years works wonderful always making smoothies specially this weather its to hot to cold me down but I mixed this with protein powder to loose weight replacement a meal..