The BLX collection of Uni-ball Signo 207 gel ink pens features intriguing dark colors created by infusing black ink with color. The pigment-based ink bonds permanently with paper, resulting in strong colors and document security. It is resistant to chemicals that can wash away dye-based inks, thus preventing check washing (a common method of check fraud). The ink is acid-free, water-resistant, fade-resistant, and of archival quality. You will also enjoy a comfortable writing experience, due to the textured grip.
This is a set of 4 colors: Green Black, Purple Black, Red Black, and Blue Black.
Dimensions: 5.6 inches length, 0.4 inches diameter (14.1 cm length, 0.4 cm diameter).