Makita Step Drill Bit, 9 Steps, 4 to 32mm Drill Diameter - D-40135 This step drill bit is designed for versatility and efficiency in a variety of drilling tasks. This high-speed steel drill bit features 9 steps, allowing for adjustable drill bit sizes from 4mm to 32mm. Its precise engineering is ideal for those in automation, electronics, electrical, and mechanical industries who require durability and accuracy in metal drilling tools. Features & Benefits • Constructed from high-speed steel for superior toughness
• Nine-step design enables precise adjustments in size
• Flute design reduces friction, promoting effective chip removal
• 10mm shank diameter for compatibility with standard drill chucks
• Overall length of 102mm with an effective working length of 80mm Applications • Ideal for creating clean holes in metal sheets
• Used in electrical panel fabrication and installation
• Employed in the assembly of mechanical components What is the significance of the step design in this drill bit? The nine-step design allows for incremental size changes, promoting flexibility when drilling various diameters without the need to switch bits frequently. How does the material influence the performance of the drill bit? Being made from high-speed steel, it offers excellent hardness and heat resistance, which is crucial for maintaining sharpness and prolonging the tool's lifespan during extensive metal drilling tasks. Can the drill bit be used with hand-held power tools? Yes, this drill bit has a standard 10mm shank that fits most hand-held power drills, making it convenient for on-site applications.