The STABILO Flow Monochrome fountain pen features a comfortable, ergonomic grip zone and a spring-loaded cap to minimize leaks. It is equipped with a medium stainless steel nib with an iridium tip for a smooth, scratch-free writing experience. Each pen comes with a royal blue ink cartridge that can be erased with an ink eraser and is compatible with any standard ink cartridge refill. Its trendy design and popular STABILO quality make it a striking eye-catcher. The medium tip (0.5 mm) ensures optimal handwriting and blotch-free writing.