This Lamy Safari Neon Lime Rollerball Pen is both fun and functional, made of sturdy and colorful ABS plastic. Its unique design features a flexible brass wire clip and comfort molded grip section. Lamy rollerball pens are as easy to operate as a ballpoint and have the similarly beautiful writing of a fountain pen. Black ink. Matching ink also available, sold separately. From elegant to practical, Lamy has a long tradition and reputation of excellence in setting a worldwide standard in the development of innovative writing implements.