The Porelon PR12 compatible calculator ink roll replaces manufacturer part number CP-12, IR-10, EA-732R, 013111. This roll offers a vibrant and even purple color, in addition to exceptional lightfastness and long-lasting impressions. This product is designed and manufactured to operate the original equipment labeled. 1 Pack Porelon specializes in the production of dyeing products and elastomers for a wide range of industries. They focus on the efforts in science, engineering, and customer service and deliver solutions that meet your exact needs.