Product 1.Food grade stainless steel Cake Decorating Icing Piping Nozzles Set , reusable, durable and non-stick, easy to clean and handle. 2.Strong, durable, corrosion resistant.Safe for most food preparation needs. 3.Durable storage case keep cake decorating supplies kits protected in separate chambers and in order for use. Convenient to storage and protect the pastry tips in separate chambers, clean and tidy. 4.Baking tools to decorate your cakes, cupcakes and cookies, suitable for professional use or baking lover DIY or kids beginners. 5.Baking Accessories Tools: Silicon pastry bags are support different color icing while decorating cakes, the couplers made it mess free to switch tips. Easy to swap out the tips to try out different designs.