Dunlop Ultex Sharp Guitar Picks are Better. Faster and Stronger. Dunlop has developed a new pick in our powerhouse Ultex line that was made for high attack speeds and ultimate shredding. Based on a coveted, vintage tortoise-shell pick in our collection, the new Ultex Sharp has a rigid body that tapers into a thinner, sculpted tip for greater control and speed. The pick?s seamless, contoured edge offers a variety of playing surfaces and tones. Virtually indestructible, it delivers crisp tone and a quick-release attack.