SANFORD BRANDS-Sharpie Permanent Marker: Twin Tip. Need we say more? Sharpies have been one of the most popular permanent markers ever made. These markers are known for quickly drying, being permanent and water resistant on most hard-to-mark surfaces such as glass, metal, photos, coated paper and most plastics. This package contains one black double-tip Sharpie marker: one ultra fine and one fine tip. Conforms to ASTM D4236. Made in USA.