The Sharpie Twin Tip Permanent Marker can be used on most surfaces. With a 1mm fine tip at one end and a 0.5mm fine nib at the other. Ideal for everyday use; at home, on the jobsite etc. The high-quality ink dries quickly and resists both fading and water. The cap quickly identifies the colour inside, there is also a handy clip that allows the marker to be attached to a pocket or folder.