The Porelon Adler Royal Sat II Correctable Black Mylar Ribbon replaces manufacturers part numbers 232, 901232, 911232, and EC001I. This ribbon provides vivid and consistent color, exceptional light fastness and durable impressions. This product has been designed and manufactured to operate the original equipment identified. 2 pack. Porelon specializes in creating inking products and elastomers for a wide variety of industries. They focus their scientific, engineering and customer service efforts on delivering solutions that perform to your exact specifications.