If you want to create perfect lettering every time then Windsor Clickstix are a great option. Virtually unbreakable and simple to use these indispensable tools take the hard work out of inscriptions and numbering on cakes.
These cutters are simple to use and can be used traditionally by depressing the cutter into fondant or gum paste. They can also be used by rolling a rolling pin over the cutter. The YouTube video below is direct from Windsor Cake Craft and explains the best way to use their Clikstix cutters.