I have two Pentel 0.5mm classic black pencils with the teeny weeny erasers under a steel cap. I have used these since high school, so over 40 years. (I also h

I have two Pentel 0.5mm classic black pencils with the teeny weeny erasers under a steel cap. I have used these since high school, so over 40 years. (I also have a Sharp calculator from the same era that is still working just fine. The Japanese really built things to last in the 80s.)