Large set of 24 clear plastic icing and piping nozzles in a handy storage case. Dimensions shown below are for the complete set, in its case. Ideal for piping, writing and creating swirls, stars, rosettes, and many more designs for decorating cakes and biscuits, and piping food. Each nozzle is approximately 3.5cm diameter x 5cm tall and they come with a variety of shapes and sizes of holes (including 12 with plain round holes from 1.5 down to 0.1cm diameter, and 9 with star shaped/ fluted holes from 1.2 down to 0.1cm). Coupler not required if used with our icing bags or with disposable bags.