OHTO PROMECHA 0.3 (SP 503P) + SP-504 Set of 2

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This is a discontinued drafting mechanical pencil from OHTO.
This product is a set of PROMECHA 0.3 (SP 503P) 0.3mm and SP-504 0.4mm.

OHTO is an established writing instrument manufacturer with a long history of technology and achievements, having developed rollerball pens (water-based ballpoint pens) in the past.
Regarding drafting mechanical pencils, they produced products with gimmicks that stimulated the desire to own them, but most of them have now been discontinued.
This model features a pen tip extension mechanism and a rubber grip that is non-slip.

This is one of the pencils I collected when I was a student of architecture. It is almost unused, but there are some minor scratches from being displayed in stores since it was discontinued at the time of purchase.
Both erasers are unused, but there is some slight soiling as mentioned above. This is a more affordable model than other PROMECHA models, and it is slightly smaller and simpler with fewer gimmicks.
Since the pen tip is not retractable, it feels slightly more robust and less prone to breaking than the higher-end models.

It is a set of a rubber grip and a knurled metal grip.