It's a beautiful bowl and fits perfectly in my 20 year old KitchenAid mixer.  I was nervous because I heard some people saying it didn't fit in their machine.  Unfortuately, mine arrive with a warp in the base of the bowl and had to be replaced.  Wayfair directed me to the manuacturer, and the item was replaced without issue.  
I have not use it yet, but I am excited to try it out.