ZEBRA Mechanical Pencil Delguard Type Lx Black P-MAS86-BK Core Diameter 0.3mm

[Type-Lx/0.3] For those who are particular about function and design/Can write thinly and neatly. But it doesn't break [Equipped with Delguard system that prevents the core from breaking] Protects the core from all directions [Vertical direction] 1: Upper spring absorbs writing pressure / 2: Releases the lead upward to prevent breakage [Diagonal direction] 1: Lower spring absorbs pen pressure / 2: Tip protrudes to protect the lead [Caution] If you knock more than 4 times to write without the lead sticking out, it may break.