Sharpie Ultra Fine Permanent Marker 0.3mm, Black - 2 Pack. These Sharpie Extra Fine Permanent Markers are great for permanently writing on a wide variety of surfaces. They have 0.3 mm nibs which increases the accuracy and control of your markings. The quick-drying ink is both fade and water resistant making it a great choice for both indoors and outdoors. They will mark on a wide range of surfaces. The pocket clip lets you easily take these markers with you on the go. The ink is made up from a non-toxic formula. These markers have black ink.