Combining the ease-of-use of a ballpoint pen with the smooth writing of a fountain pen, this Swiss-made pen features a replaceable liquid ink cartridge, retractable design, and durable metal body. Five colors - black, grey, red, white, blue. Black refill included. The rollerball for Caran d'Ache in the 849 series. Previously, their only rollerballs were in their upper level engravable pens.