Dritz-chalk cartridge set.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 4-3/4×7/16in 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.