Leuchtturm1917 Drehgriffel Nr.1 Bullet Journal Edition BallpointGel pen made from precision milled aluminum and brass Stroke size 0,5 mm Refillable The Bullet Journal Drehgriffel Distinctive tip and the twist head are made of brass and give this writing instrument its special character. The black barrel is made of lacquered aluminum that has been sandblasted, which provides a slightly grainy, matt surface with a pleasant grip. The logo on the mid section stands out discreetly against the glossy black lacquer