This 20-piece drill set includes sizes ranging from #61 to #80, allowing for precise drilling in various materials. Crafted from high-speed steel (HSS), these drills are durable and maintain sharpness for extended use. The fully polished and ground finish ensures smooth drilling operations. Stored in a plastic case, this set is convenient for organization and transportation, making it suitable for a range of applications in home, office, jewelry making, wire installation, and more.