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 Really High Five: a set of 15 metal dies measuring between .375x.375 inches and 1.625x1.25 inches. WARNING: Choking Hazard. Not suitable for children under 3 years. WARNING: May contain items with sharp edges. Handle with care.