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.