Composition: Co Fe Mn References: Can be used as a body stain. Maximum temperature 2300 F. May be used with our without Zinc. Mason Stains Home Page 6616 Chrome Free Black - 1/4 pound 6616-14$5.64 Chrome Free Black - 1/2 pound 6616-12$10.55 Chrome Free Black - 1 pound 6616-1$19.64 Chrome Free Black - 5 pounds 6616-5$90.95