Zebra Mechanical pencil that does not break the core Dell Guard Type GR

Fingers do not hurt (* Compared to manufacturer Delgard. Pain varies from person to person), with grip!
It has a two-layered grip with different textures on the top and bottom, so you can continue to use it without interruption even if you hold it for a long time.
Recommended when writing a lot, such as studying for exams.
It protects the core from breaking even from the strongest writing pressure at any angle during writing.
When a strong writing pressure is applied vertically to the paper surface, the spring built into the shaft allows the core to escape upward and prevent it from breaking.
When a strong writing pressure is applied diagonally, the metal part at the tip automatically comes out to wrap and guard the core.
The two mechanisms operate by automatically adjusting the distribution according to the angle and strength of the applied force.
(* If you knock 4 times or more to write from the state where the core is not out, it may break.)
(* If you write using a color core or a dark core of 3B or more, it may break.)