Pyrex Pie Moulds Round (Ø28cm) Set/2 The Pyrex Pie Moulds Round (Ø28cm) Set/2 consists of two different moulds of the same size. Both dishes have a diameter of about 28 centimetres. One mould has a smooth side and the other a ribbed one. These dishes are perfect for baking sweet and savoury cakes, as well as serving them in. Cutting the baked goods can simply be done in the dish, as the glass is scratch-resistant.