The Rose Calyx Cutter Set of 3 (CutClx) are made by FMM of England and can not only be used on Roses and other flowers but they may also be used as a flower by their own. The approximate size of the cutters are;, 1-1/8" x 1-1/8", 1-3/8" x 1-3/8 & 1-1/2" x 1-1/2". The Rose Calyx Set can be used with a variety of mediums such as Gumpaste, Sugarpaste, Fondant, Marzipan, Modeling Chocolate, etc. FMM includes instructions for their use in the package. These cutters are made from a long wearing food safe & easy to clean plastic by FMM Sugarcraft.