Versatile Center Drill Set: This 5-piece set of 4” length long center drill bits with assortment of sizes ranging from 1.0 to 5.0, is suitable for various drilling applications in metalworking and woodworking tasks Reliable Material: these center bits crafted from high-quality M2 High-Speed Steel, offer durability and heat resistance for extended use and sturdy, effective drilling performance on various materials such as aluminum, steel, brass Precise 60-Degree Angle: Each center drill bit features a precise 60-degree angle, ensuring accurate centering alignment and countersinking in metalworking applications, reliable in delicate materials like electronics, with the help of cutting oil Starting Point Creation: These center drill bits are perfect for creating a precise starting point or center holes for subsequent drilling operations and for accurate hole positioning; for stainless steel please use low speed, lubrication Wide Range of Applications: these reliable center drill bits tools provide precision and control for creating centered holes and countersinks for screws, bolts, or dowels in metalworking lathe milling or woodworking projects Product description Crafted with Excellence: M2 High-Speed Steel for Dependable Performance Our center drill bits are meticulously crafted using M2 High-Speed Steel, renowned for its solidity and high temperature wear resistance. 5 Pieces Center Drill Bits 4 inch Long Set: A Must-Have for Metalworking Versatility Meets Practicality Compatible with lathe machines and most electronic drills, these center drill bits offer versatility across multiple metalworking applications. From general drilling to creating perfect starter holes, each task becomes seamless with the right tool at hand. The 5 Pieces Long Center Drill Bits Set is your go-to tool for accurate results Crafted with M2 High-Speed Steel, with their 60-degree angle, 4 inch overall length these center drill bits excel in drilling precise center holes, countersink holes, or starter holes for larger drill bits. Unmatched Accuracy for Flawless Results Including 5 sizes 1.0, 2.0, 3.0, 4.0, and 5.0 The set comprises a wide range of sizes, including #1.0, 2.0, 3.0, 4.0, and 5.0, catering to various drilling needs. All 5 center drill bits in 4-inch Total Length. This Center Drill Bits Set comes with a portable storage case. Precision and Consistency for Tough Materials Whether you are working with steel, iron, alum, carbon steel, brass, or other tough materials, these center drill bits ensure accuracy and consistency for your projects. Most Popular Sizes: No Compromises on Performance For your utmost convenience, sizes 1.0mm and 4.0mm stand out as the two most commonly used center drill bit sizes. Whether you are a novice or a seasoned professional, this set help you handle your metalworking tasks effectively, producing impeccable results. Experience the 5 Pieces Center Drill Bits Set With the 5 Pieces Center Drill Bits Set, let's welcome accuracy, durability, and convenience, and witness the transformation in your projects. Tips for Optimal Performance To maximize the potential of your center drill bits, here are some handy tips: 1. Securely fix the workpiece in the lathe machine to prevent any wobbling during rotation, ensuring precise drilling. 2. Before drilling, ensure the surface is free from impurities. Use oil or suitable lubricants to protect the bits and enhance drilling efficiency. 3. When drilling, it is recommended to go 2/3 deep on the tapered section for optimal results. 4. Pay attention to the drilling sound. If any abnormalities occur, immediately cease drilling, address the issue, and resume after rectification. 5. Maintain cleanliness by cleaning the center drill bits before and after each use. Apply oil to store them properly, preventing rust and preserving their quality.