Yup, those are the correct 2 different sizes they came with
There's no way to tell which ones you have until you remove them from the housing
Be VERY careful not to chip the magnetic shaft assy - don't try to pry them off the shaft
I've tried the freezer trick for removal but I didn't have any success. Nor did it help to re-install them
I've tried 3 different styles of bearings and have found
these ones to be the quietest so far
It took about a month at full speed on EcoSmart before they became as quiet as they'll get
If you need the 6X15mm ones you'll need to contact them for the correct p/n, but I'd recommend the style I linked
If you have any questions, shoot me a PM