광학 펜

I was a bit unsure about picking between the two colors, but honestly, either works perfectly for my lab notes. It’s a no-fuss pen that does exactly what it should, and I’ve already used it every day this week without any issues.

The two-tone color options make it easy to distinguish between my left and right lens markings. It feels well-balanced in hand and doesn’t slip during detailed work. Exactly what I needed for quick, precise adjustments.

I needed a reliable pen for marking lenses, and the two color options made it easy to keep track of different jobs. The grip feels solid in my hand during long work sessions.