Zebra Tect Two Way Mechanical Pencil, 0.5mm, Black, MA41-BK

[Flush function ON] Turn the center of the shaft to the right and shake to release the lead [Flush function OFF] Turning the center of the shaft to the left fixes the weight inside the shaft, resulting in a low center of gravity for stable writing. [Drafting pen tip] A long, extra-fine tip pipe that provides a wide field of view for a clear view of your hand. [Specifications] Upper shaft: Resin, painted finish / Lower shaft: Brass, plated finish / Silicone ring grip [Size] Total length 149 x maximum shaft diameter 10.5 mm / weight 23.6 g