Description: _x000D_ A twist drill is a tool that cuts a round hole of a workpiece by rotary. It is named after its flute shaped like a spiral. Twist drills can be used in manual, electric hand-held drilling tools, milling machines, lathes and even machining centers. The bit material is generally a high speed tool steel or a hard alloy. _x000D_ _x000D_ Features: _x000D_ 1. Suitable for aluminum, wood, malleable and deep hole drilling positioning holes iron. _x000D_ 2. Through heat treatment, stainless steel, tool steel, and other workpiece that are difficult to process, can be processed by these twisted drill bits. _x000D_ 3. High speed steel to obtain high hardness, high wear resistance and high toughness. _x000D_ 4. Can be used in manual, electric hand-held drilling tools, milling machines, lathes and more. _x000D_ 5. Sharp twisted drill bits will make the drilling easier and more effortless. _x000D_ _x000D_ Specifications: _x000D_ Material: High speed steel _x000D_ Surface Treatment: Titanium plating _x000D_ Handle: Hexagonal handle _x000D_ Quantity: 13pcs _x000D_ Diameter: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm _x000D_ Weight: Approx. 167g _x000D_ _x000D_ Package Includes: _x000D_ 13 x Twist Drill Bits