Cretacolor Mega Colored Pencils have extra-thick 6.4 mm cores for making broad strokes. The cores have a slightly waxy formulation that feels soft when applied and lays down rich color— excellent for blending and layering. They are designed for all skill levels. Austrian quality at its best. Perfect for layering, smoother and thicker then traditional colored pencils.Details:Available in multiple colors6.4 mm diameter12 pencilsHighly pigmented and opaqueNontoxicConforms to ASTM 4236