From a culture that has revered the art of writing for more than a thousand years comes instruments that celebrate both writing and art. The Pilot Vanishing Point Collection Metal Ink Cartridge Cap is a genuine Pilot metal cap for Pilot Vanishing Point fountain pen ink cartridges. It is recommended when using ink cartridges instead of a converter. It helps protect your cartridge while activating or retracting the nib and is approximately 1-7/8 inches in length. Help keep even your most treasured fountain pen running smoothly. For every creative endeavor, Pilot is the ultimate writing tool.