Worther (Woerther) Shorty 3.15 mm Mechanical Pencil, Blue For drawing, designing and sketching Shorty, by Worther of Germany is a practical mechanical pencil. With its thick, soft 3.15 mm graphite lead, it can write on almost all materials, including wood, metal, paper, plastic, glass (using a red lead), or x-rays (using a white lead). There is no fuss with sharpening the point - the leads automatically wear to a conical shape as you write. Advance or retract the lead with the pushbutton spring clutch mechanism. Comes with 2 spare 7B graphite leads. Additional leads in 8 colors are available in our store under Refills. Rugged plastic hexagon-shaped barrel is 1/2" diameter. Pencil is 4-1/4" long. Leads are approximately 2-3/4" length (70 mm). Made in Germany.