I got this as a gift and it does not fit on the mixer correctly. Unless I put some metal pieces inside the Hub it doesn't spin like it's supposed to. Customer service was great and tried to fix the problem they sent me a new food processor that did not fix the problem it was the same problem. I took my mixer back because customer service said it might be a bad hub I exchanged the mixer for a new one and it still didn't work. All my other accessory pieces work fine but the food processor will not work properly without Extra metal pieces inside the Hub.