New, unused item. I am selling this to organize my collection. I believe there is no deterioration as it has been stored in a dark place. Drafting Mechanical Pencil A "Sekaido Limited Color" version of the long-selling Staedtler drafting mechanical pencil is now available! This is the same specification as the popular "925 25" series released in 1990, with a low center of gravity for a stable body balance that allows for accurate drawing and a design that reduces fatigue even during long writing sessions. The 4mm long sleeve provides a wide field of view and makes it easier to adhere to a ruler. The grip also has a non-slip finish for a secure hold. Color: Green (Sekaido Limited Color) Lead thickness: 0.5mm Dimensions: 143mm x 12mm x 8mm Weight: 17g Material: [Body] Aluminum Built-in lead: HB Hardness window: 3H~2B