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Feature
All-metal penholder is with particularly good texture, the machine-made cartridge with brass can go out smoothly. Buy a pen you can be sent a box of 0.5mm-2B cartridge.Active cartridge tube are used to prevent the cartridge fracture, while not blocking the line of sight, which are easy to use ruler to paint precisely on the paper.
Hexagon penholder can prevent slip of the pen from the desktop, whose grasping point is handled by metal knurled to be anti-skid.
The pen point takes a rotary mark design, which can easily help you remember the type of cartridge.