This convenient cookie decorating set has all the tools you need to decorate cookies in royal or buttercream icings. Use the 2 round tips to pipe outlines, letters, dots and swirls. Use the star-shaped tip for shells, stars, zigzags, and rosettes. The small petal tip is good for flowers, ruffles, drapes, swags, and bows. Disposable decorating bags make for easy cleanup.