The hallmark of the Tintenkuli is the prominent red ring on the pen body, which later became the basis for the Rotring brand name. It features a flexible 14-carat gold nib. Equipped with a piston filling mechanism, it is an excellent pen suitable for everyday use, coming with a one-year warranty.

This celluloid mechanical pencil advances the lead by twisting the barrel. Spare leads can be stored inside the body. Lead refills are available in stores. The writing instrument comes with the Rotring package shown in the picture, and with a one-year warranty.