Metal decorating tip no. 18 from Wilton. Star tips are decorators' most-used tip. They create a baroque, sculpted shape that brings a decorative quality to icing. They're perfect for making edges, borders, and rosettes. These tips can help you make countless designs – they work with any kind of icing. A smooth, even finish is yours, making your cake look stunning. Diameter: 0.6cm Metal decorating tip no. 5 from Wilton. Round tips are the ideal choice for outlining, printing designs, filling, making dots, balls, beads, and lacework. Diameter: 0.4cm. This product is not dishwasher safe. Decorating tips can be used with standard decorating bags and couplers. This product is not dishwasher safe.