So glad you asked! Your name or company logo imprint is etched onto the surface of the pen with a diamond point or rotary blade, which can achieve very fine lines. The etching removes the top layer on the pen, like a soft touch rubber finish, to reveal the color of the barrel. This is oftentimes silver, as this is the most popular color for an engraved imprint.
Personalized engraved pens are an especially attractive option because the engraving offers a permanent imprint that won't wear off with use. That means your name, logo or contact information will always be in sight!