LAMY Swift Rollerball Pen, Matte Black (L331) Re-discover the joy of writing with ink with the LAMY Swift. Writes with a wonderful and precise flow with ball and ink. As you extend the tip of its large capacity refill,When you operate the push button again after writing, the refill retracts and the clip moves out again ready for use. The clip retracts into the pen body. This Cap-less roller ball pen with retractable clip enables extraordinary smooth and precise penmanship.