The Porelon IR90/91/92 Compatible Cash Register/POS Ink Roll replaces manufactures part #'s ER-9091R, 199270 and 013116. This ink roll provides vivid and consistent purple color in addition to exceptional light fastness and durable impressions. This product has been designed and manufactured to operate the original equipment identified. 1 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.