● Limited Edition Platinum Fountain Pen Pro-Use 231 O-lene Guard Mechanism Model Drafting Mechanical Pencil 0.5mm MSDC-1500B-56/Blue ● The "Pro-Use 231" is born, equipped with our unique "O-lene Guard Mechanism," a first for the Pro-Use series. To further improve convenience, it is equipped with the "O-lene Guard Mechanism" to protect the lead from external impacts, preventing lead breakage from impacts such as drops. In addition, it is equipped with a "pipe slide mechanism" that allows the tip lead pipe, which is a feature of drafting pencils, to be stored. This is a safety design that prevents damage to the pipe and scratches to the outside during transport. ■ Equipped with the "O-lene Guard Mechanism" to protect the lead from external impacts. First appearance in a lead pipe type! ■ Equipped with a "pipe slide mechanism"! Safely stores the tip lead pipe. ■ Rubber grip prevents finger slippage and supports accurate writing. ■ The lead hardness indicator on the eraser cap allows you to see the built-in lead hardness at a glance. ＜Product Specifications＞ ● Product Name: Pro-Use 231 [Limited Edition] ● Part Number: MSDC-1500B ● Body Color: #56 Blue ● Lead Diameter: 0.5mm ● Size: Total length 152mm (148.7mm when the lead guide pipe is stored) Maximum diameter 10mm Standard weight 17.1g ● Materials: Body/Body (resin) / Clip (chrome-plated metal) / Gripper (rubber) / Taper (chrome-plated metal) Thank you for viewing.