Staedtler Quick-Drying Fine Point Permanent Markers (STD318WP4) - Ideal for Office, School & Art Projects - Long-Lasting Ink for Paper, Plastic & Metal Surfaces

I love these pens! I use them to mark on laminated calendars and checklists and to make notes on the mirror. These would be perfect for teachers who use overhead projector film. (Do they still use overhead projectors, or am I dating myself?) Writing doesn't smudge or rub off but is easily and cleanly removed with an alcohol wipe. Much better than dry erase markers, which smudge all too easily.Better than sharpie's but over time the mark will still come off the plastic I write on. Customers feel the need to hold and twist the items in their hands. I have no experience with other marks to compare the difference but overall happy with product.These things are great. They mark on everything.These are the absolute best permanent markers I have encountered. The ink dries fast, doesn't smear and seems to be permanent on the surfaces I have tried. German engineering at its best, I think. I will be buying more of these.Bought this to write on my plastic cards. They work! It has been a while and the signatures are still legible. It did smudge a bit but not to the point where it ruined the legibility of the signature.Hard to find these pens in different colors. Great quality. Definitely recommend. Arrived on time.My wife uses these for sewing and marking muslins/toiles. They work fantastic.Great pens. Work well