Porelon 11451 Brother EM100/200 Compatible Correctable Mylar Typewriter Ribbon, Replaces Part #'s 7020, 7220 and 7420, 2 Pack Vivid and consistent color - Black, Exceptional light fastness and durable impressions Replaces manufacturers part #'s 7020, 7220, and 7420 Compatible typewriter mylar ribbon This product has been designed and manufactured to operate the original equipment identified, and will not void your equipment warranty. One year (12 months) warranty from date of purchase