The Faber Castell Company (I think it’s a German company) has been producing best products as far as I know. I’ve known this brand since I was in Junior High, and surely enough it’s the best brand for its pencils, pens and markers. I bought this marker from Faber Castell for our wedding reception desk, for helping the guests in filling their plastics guest pass card used for entering our wedding party. I realized that I had made a mistake by designing the guest pass card from plastic, but thanks to this marker, it wasn’t a big problem. I chose the ‘F’ model, whose tip is designed thin, whereas there is also the ‘M’ model whose tip is bigger. I chose this model because it was going to be used for writing in a small pass card. The type of this marker is Multimark 1513 Permanent marker. It can be used on the surface of OHP, CD, glass, plastic, metal, etc. And it’s permanent so it won’t be easily wiped off. The ink is black. And here’s what I like: it has a green-colored eraser on the bottom just in case we make a mistake in writing. I’ve had it for almost three years now, and find that it still works. My hubby rarely uses this because he doesn’t use much of an ‘F’ tip. But I still use it for my blank CDs. Overall, this is a very great product. I know I can trust Faber Castell, it’s a very reliable brand.