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 Sense KAB957PL - Fits the Chef Sense XL If 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.