The FMM Rose Calyx Cutter 55mm (CutClx70) gives you a calyx that is accurate & attractive, it can also be used for other flowers as well. The deep cutting edges lets you frill the edges for a realistic effect. The cutter is approximately 2-5/8" across. FMM includes instructions for their use in the package. This Calyx Cutter is made from a long wearing food safe & easy to clean plastic by FMM Sugarcraft.