General description This set of 10 HSS Straight Shank Twist Drill Bits is specifically designed for bead drilling, processing, and jewelry making. Made from high-speed steel, these drill bits are sturdy, durable, and feature fine workmanship. They come in a compact plastic storage case, making them easy to carry and store when not in use. Technical specifications Item Type: Straight Shank Twist Drill Bits Material: High Speed Steel Drill Diameter: 1.6mm / 0.1in Package Contents: 10 x Twist Drill Bits Other information