Product information: Shell material: plastic Specification: 8 Size: 15.2 * 2 * 14 Package list: 8 colored pencils 8 VIBRANT NEON CHALK MARKERS: Premium quality chalk pens draw more consistent, brighter, and smoother lines. Tried and tested by thousands of professionals, calligraphers, and artists; we guarantee youll be impressed FOR CHALKBOARDS, WINDOWS, MIRRORS MORE: Write in smooth, bright chalk ink on chalkboards, wine glasses, dry erase boards, mirrors, car windows, mason jars, vinyl labels, black boards, party cups, coffee mugs, and slate cheese boards The world is your chalkboard EASY TO ERASE: Liquid chalk marker wipes off cleanly from metal, glass, plastic, ceramic, sealed wood, slate, vinyl, rubber, magnetic chalkboards, dry erase whiteboards, and more IMPORTANT: Chalk ink is permanent on painted walls and porous surfaces.