Grape cluster silicone mold creates a thin flat backed grape leaf that measures: 1 & 3/4ths inch x 1 & 3/4ths inch x 5/16ths inch thick Grape samples are not included. Mold release is not needed, mold can be heated up to 400 degrees or used in the freezer. Food safe but do not use your mold for food if you have used other materials in it such as resin, this will cause cross contamination. Soft flexible mold works with many materials for crafts such as resin, epoxy, polymer clay and for food such as fondant, chocolate, candy, mints, butter, ice. Measurements listed are of the finished piece the mold creates, the material you use can make a slight difference as some materials shrink when drying. Silicone and mold are made in the USA.