Features Drilling Effect: Twist diamond is a tool that can be used by rotating cutting workpieces. It is suitable for aluminum, wood, can be extended and deep -hole drilling to locate the hole iron. Heat Treatment Technology: The hex drill is made through heat treatment technology. It is made of high -speed steel materials. The difficulty of processing can be treated by these distorted drills. Scope of Application: Wingding drills can be used for manual, electric handheld drilling tools, milling machines, lathes and even machining centers. Easy and Practical: The sharp twist drills will make the drilling hole easier, easier, easy to install and disassemble, and can be used at any time, which is more convenient and saved. High Hardness: Twist drill bits use selected materials, which have the characteristics of high hardness, high scratch resistance and high toughness, so that we can work more efficiently. Features: 1. Suitable for aluminum, wood, malleable and deep hole drilling positioning holes iron. 2. Through heat treatment, stainless steel, tool steel, and other workpiece that are difficult to process, can be processed by these twisted drill bits. 3. High speed steel to obtain high hardness, high wear resistance and high toughness. 4. Can be used in manual, electric hand-held drilling tools, milling machines, lathes and more. 5. Sharp twisted drill bits will make the drilling easier and more effortless.   Specifications: Material: High speed steel Surface Treatment: Titanium plating Handle: Hexagonal handle Quantity: 13pcs Diameter: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm,  4.8mm, 5mm, 5.5mm, 6mm, 6.5mm Weight: Approx. 167g   Package Includes: 13 x Twist Drill Bits Package List