Porelon 11565 Texas Instrument 8920/8930 Compatible Nylon Printer Ribbon, Replaces Manufacturers Part # 2551152-0011, 1 Pack Vivid and consistent color - Black, Exceptional light fastness and durable impressions Replaces manufacturers part # 2551152-0011 Compatible nylon printer 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