Visconti Refills Pack of 7 Blue Fountain Pen Cartridge - V-A5217
7 ink cartridges per container. International sized ink cartridges measure to 1.5 long and fit most fountain pens that use cartridge / converter filling systems. Is not compatible with Visconti power filler or piston-filler pens (like Homo Sapiens). Packaged in a bakelite canister.