This is a rollerball pen that needs no cap. A smooth, clean flow of ink. But what is absolutely unique - a clip that retracts completely for extra writing comfort. The Lamy Swift - a great new slant on a fine old art.  The Swift rollerball pen's barrel is a cylindrical fuselage, with perforated grips to help you hold on tight. It's spring-operated clip provides a double function activating 2 oppositional movements, when the refill point is ejected, the clip is retracted preventing you from inserting it into your pocket in its open position. When the refill point is retracted, the clip is ejected. Click on the button, and the point draws up, deploying the clip once again. The rollerball pen features push button mechanism and is fitted with exchangeable black rollerball refill M 66.