Received this as a Christmas gift, was very excited to use this during the hot summer months! I made my ice cream mixture, and was dismayed to find that the attachment does not fit my KitchenAid mixer. I made sure that this attachment was correct for my KitchenAid model, which it is.  The drive assembly is too small to fit onto the drive shaft, either way that I moved the drive assembly it did not fit.  This is very disappointing, as well I received the instructions for a completely different ice cream attachment  with a different drive assembly. I'm unsure if this was just a packaging error or this just does not fit this KitchenAid model.