These dies are made of 100% high quality steel, are compatible with most die-cutting machines, and will inspire you to create cute crafts! This package contains Outside In Stitched Balloon Stackables: a set of ten metal dies measuring between .375x.125 inches and 3.5x3.875 inches. WARNING: Choking Hazard. Not suitable for children under 3 years. WARNING: May contain items with sharp edges. Handle with care. Made in USA.