AUTOMATIC PENCIL LEAD HOLDER: 5.6 MM THICK
What is the difference between this older pencil and common ones?
This one can hold 5.6 mm leads, which is three times as much graphite as you would get with a normal 1.8 mm pencil holder, and five times as much as a mechanical pencil.
And you don’t throw anything away, because it’s all graphite. What are you waiting for?