This is a beautifully designed mechanical pencil from IWI (アイダブリューアイ), a stationery brand representing Taiwan. IWI Mechanical Pencil 0.5mm Tool Hex Classic Blue Mechanical Graphite Pencil Classic Blue Material: Aluminum [Size] Diameter 10mm x Length 140.5mm [Feature 1] The 0.5mm "tool, Hex" mechanical pencil is not only beautifully designed, but also versatile as a "tool" beyond writing. The pen package displays centimeter, inch, 1:50 scale, and 1:100 scale markings, allowing you to measure sizes, and you can also use the package to draw lines. [Feature 2] The hexagonal body makes it difficult to roll, so it won't easily fall off the desk. Furthermore, the anodized surface has a beautiful pearl-like luster, combining practicality with an original design.