The model number of the Ice Cream Attachment is on the underside of the display box. It will either be:AT956- Fits the CHEF range (AT956A or AT956B)AT957- Fits the MAJOR range (AT957A or AT957B)KAB956PL - Fits the Chef SenseKAB957PL - Fits the Chef Sense XLIf you are having difficulty fitting the attachment to your machine, it may help to check the paddle. Imprinted on the paddle will be either a �C\' (for Chef), or �M\' (for Major). This is another useful way to check you have the correct attachment if the box has been disposed of.The AT957 will fit your Cooking Chef.