Tortex, The Dunlop Standard Since 1981 Tortex Picks were originally intended to be a high quality replacement for tortoiseshell. Jim Dunlop's trail-blazing creation became so much more than that, however, establishing its own identity and becoming the new standard by which all other picks are judged. Building on the precision, consistency, and color-coded gauge system he introduced with Nylon Picks, Jim resolved to create a pick with a bright and snappy attack, superior memory and durability, and an improved grip. He chose Delrin as his base material and then spent more than a year developing a special treatment process to draw out its full potential. This treatment process is what sets Tortex Picks apart from all others, providing their unique grip-enhancing matte surface and aggressive attack. Available in .50mm, .60mm, .73mm, .88mm, 1.0mm, and 1.14mm gauge packs; each pack includes 12x Tortex Picks.