The indestructible tool for intensive daily use. High-quality liquid-ink rollerball. Soft grip zone across the entire surface of the pen for a very comfortable grip. · High-quality rollerball · 4 different pen and ink colours · Advanced liquid ink technology · Smooth, smudge-free writing · Water-based ink · Non-refillable · Ink level window · With roll stop · Anti-slip surface for comfortable grip · Line width 0.5 mm for smooth writing In the masses, you only distinguish yourself by delivering top performance. The STABILO worker is not just any liquid-ink rollerball, but a rollerball that delivers top performance for anyone who writes a lot. The high-speed writing tip ensures fast, tireless and relaxed writing. Design and technology make the STABILO worker a striking presence.