Non-permanent marker pens are different to permanent marker pens because they are designed to not have permanent ink, you can remove the ink either by wiping or erasing, which is great for creating signs and menus, where you may want to remove the lettering to be able to start fresh.
Staedtler Lumocolor Omnichrom Non-Permanent Marker Pencil
The ideal pencil for tradesman, great for markings and labels on many surfaces.