Remember the chalk holders our teachers used to use? Dritz has developed one for all of our at-home needs. The chalks are only 4mm thick and come in every color you could possibly need for sewing, quilting, crafting, scrapbooking, and much more. Featuring a 4-3/4 by 7/16-inch red/yellow plastic cartridge, a sharpener to keep your chalk line fine and a reUSAble plastic box with sixteen extra chalks-eight white, and eight assorted colors. Imported. WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects and other reproductive harm.