Hydrangea Gumpaste Flower Cutters & Veiners Set Use to make gum paste or cold porcelain Hydrangeas. 2 different sizes of petal cutters are made of stainless steel Petal Veiner & center mold are made of food-grade silicone Step-by-step instructions with pictures for visual help. 1 stainless steel calyx cutter included in the set.