Description Specifications. Lead Diameter: 0.5mm; Barrel Diameter, Length: φ0.41inches (10.5 mm), 5.63inches (143 mm); Outside Dimensions: 2.05 x 7.87 inches (52 x 200 mm) Smooth Writing Experience. The Kokuyo Campus mechanical pencil offers a smooth writing experience similar to that of a regular pencil. With its thick lead, it is resistant to breakage, ensuring a smooth and uninterrupted writing flow. Durable Metal Clip. Equipped with a sturdy metal clip, this mechanical pencil securely attaches to pockets, notebooks, and other items, making it convenient to carry around. Non-Slip Hexagonal Rubber Grip. The pencil features a hexagonal rubber grip that fits comfortably in your hand, providing a non-slip and easy-to-hold grip. The front of the grip is designed with a hexagonal shape for a secure grip, while the back is shaped for a comfortable hold. Slim Design for Clear Writing. The slim design of the pencil enhances visibility when writing. The fine tip allows for clear and legible writing, and the metal construction ensures stability and durability.