THESE ARE THE PROTTIS PRC 105 & 107!
Mechanical pencils with rings indicating the diameter.
Lavender stands for 0,5mm, skyblue for 0,7mm. Both have our Cushion-Tip-Slide mechanism.
![](https://penac-brand.de/wp-content/uploads/2019/07/pfeil_9.png)
![](https://penac-brand.de/wp-content/uploads/2019/07/pfeil_5.png)
Our unique Mechanisms enable you to write up to four times longer than with conventional mechanical pencils.
![](https://penac-brand.de/wp-content/uploads/2019/07/pfeil_11.png)
Mechanical pencils with rings indicating the diameter.
Lavender stands for 0,5mm, skyblue for 0,7mm. Both have our Cushion-Tip-Slide mechanism.