Makita Step Drill Bit, 9 Steps, 4 to 20mm Drill Diameter - D-40185 This step drill bit is designed for precision drilling in various materials, including metal. It features a high-speed steel construction, ensuring durability and longevity. With a diameter range of 4mm to 20mm and nine distinct steps, this tool offers versatility for different drilling needs. The overall length is 75mm, with a working length of 53mm, making it suitable for a range of applications in professional settings. Features & Benefits • Constructed from HSS for enhanced durability and performance
• 9-step design facilitates smooth transitions across sizes
• Drill diameter ranges from 4mm to 20mm for versatility
• Hex shank of 1/4 allows compatibility with standard drills
• TiN coating reduces friction for efficient drilling Applications • Used for drilling precise holes in metal sheets
• Suitable for automation projects requiring various hole sizes
• Commonly utilised in automotive repair and fabrication
• Effective for creating pilot holes in industrial What are the advantages of using high-speed steel for this tool? High-speed steel provides enhanced hardness and wear resistance, enabling the bit to maintain its sharpness over extended use. This results in cleaner cuts and reduced chipping, especially when working with harder materials. How does the TiN coating improve the functionality of the drill bit? The titanium nitride (TiN) coating lowers friction during drilling, which enhances both cutting efficiency and tool life. This means less heat build-up and extended operation without the need for frequent bit changes. Can this bit be used with different drill types? Yes, the 1/4 hex shank design allows compatibility with a variety of drill types, including electric, cordless, and impact drills, making it a versatile addition to your toolkit.