Diamine 150th Anniversary 40ml 1864 Blue/BlackDiamine has been manufacturing probably the wide color range ink refill in the world. Thorough out all the transition over the years, Diamine Co. has successfully maintained their status by providing excellent quality fountain pen refill with traditional process and techniques. Diamine ink is compatible with all kinds of brands. Now to celebrate the 150 years of Diamine Co. Ink, Diamine presents anniversary collection, with 8 different pleasant color fountain pen ink available in 40ml. The ink goes along with all kinds of brands, thus it is the first choice for most of the pen enthusiast.