Pen or pencil

A pen or pencil comprising a casing extending from a rear end of said pen or pencil to an area adjacent to a writing tip of said pen or pencil having an outside contour, the outside contour is provided with two or more arcuate gripping surfaces, at least one indented intermediate region located between two adjacent gripping surfaces in a peripheral direction, and the outside contour of the casing is radially within a notional intersection line of the two adjacent gripping surfaces, wherein the intermediate region extends in the peripheral direction over an angular region (β) which is between 30% and 70% of that angular region (α) over which one of the adjacent gripping surfaces extends.