For glass well, otherwise less suitable. Generally, rather only for smaller engravings

The pen fits comfortably in your hand. In glass can be so really engrave properly! Looks great! However, I must say that it was unfortunately already. For me this pen is therefore not sufficient. For other materials he has not enough power. He engraved not really, he just basically scratch. On metal - at least on the dog tag on which I Anwand him - you could indeed see him clearly enough, for it was but very "krackelig". It may be that this was my fault, but the glass so I had fewer problems. Otherwise, I have not tried it on stone, and semiprecious stones, which I also particularly needed him. However, this could unfortunately forgotten. It was barely visible.

For now and then a small engraving this pen is safe enough. For larger engravings and / or those that are decorative / look beautiful, I can not recommend him.

(Here again the Note: Pearl Shipping = Very good, competent and obliging seller!)