This cookie cutter and matching stencil make your cookie decorating faster and easier! Yes you can use them on fondant for your cakes :) Here is a set of 2 pcs. including cookie cutter and matching stencil. Size of the cutter : 4 inches . Size of cutter is taken at the largest dimension. MATERIAL COOKIE CUTTER : Made of PLA plastic which is environmentally friendly and approved for food contact by the FDA. PLA is biodegradable, derived from natural resources such as: corn starch, tapioca roots or sugarcane. CARE: To be washed by hand only in warm soapy water *** NEVER IN HOT WATER ! not dishwasher safe. Putting the cutters in a dishwasher could melt, warp or otherwise damage the PLA. The color of the cutters are sent randomly. STENCIL: This stencil can be used to airbrush and scrape on cookies with royal icing, or other projects using paint. ! They are washable and reusable. MEASUREMENTS: Overall stencil is 5.5 inches x 5.5 inches square to fit the stencil genie,made out of 5 mil food safe plastic. Design size cutout is made to fit the cookie cutter. CARE: Just rinse with warm soapy water and lay flat to dry. *** do not put this stencil in the dishwasher !