Awesome! CBS Dichroc Crinklized Primary Color glass packs contain a random sampling of CBS Dichroic solid color coatings.  The surface of this glass crinkles upon firing, creating thousands of dynamic shapes throughout the glass. For maximum effect, fuse to a peak temperature of 1475 F degrees or higher. One pack comes with 12 2”x4” pieces- you choose black or clear base glass. Image shows black base glass after being fired, to show the crinklized effect.