"Package of Two" Panasonic Jetwriter, KX-E400, KX-E600, KX-E4000 and Others Typewriter Ribbon, Black, Correctable, Compatible Black Correctable Film Ribbon Compatible Package of Two Ribbon Cartridges Replacement For: Dataproducts R7360, GRC T381, Nu-kote B136 and Panasonic SKX-ECK Swartz Ink Products Ribbon