●The piping tips created using 304 high quality stainless steel. Strong, durable, stainless steel, corrosion resistant, reusable, non-stick, tasteless & non-toxic, easy to clean and dishwasher safe. ●Reusable Piping Bags ， Also wide opening makes bag easy to fill and operate. Measured 12 Inch (31*17cm) .Thickened, prevent burst or rip, the strong grip design of the piping bag makes it easier to hold and pipe; With the help of the piping nozzles you are able to pipe create different kinds of shape for your own cake. Get your creative juices flowing! ●Professional cake decorating tools: Perfect tools to decorate all your desserts, cakes, cupcakes, cookies, pastry, sugar craft and more, helps you easily decorate cakes for birthdays, weddings and other events. Ideal for beginners as well as for professionals. A ideal gift for yourself or friends.