- Durable and Wear-Resistant: Crafted from high-speed steel (HSS 4241) with titanium coating, these drill bits offer exceptional longevity and maintain sharpness for years. - Versatile Compatibility: Designed for hand drills with a power rating above 550W, these bits are ideal for drilling materials with stainless steel hardness below 25 degrees. For thicknesses of 1-2mm and hole diameters greater than 14mm, a bench drill is recommended. - Enhanced Cooling for Extended Life: Incorporating a cooling method during drilling by injecting water significantly prolongs the bit's service life. Optimal drilling speed is recommended at 250-400 RPM. - Space-Saving Design: This set of 6 step drill bits effectively replaces 50 individual drill bits, minimizing clutter and simplifying your toolkit. - Efficient Cutting Performance: The two-flute design ensures faster and smoother cutting, making your drilling tasks more efficient. - Secure Fit: Large bits feature a 3-sided shank while smaller bits utilize a hex shank, preventing slippage in the drill chuck for safer operation. Use Scenarios: 1. Ideal for metalworking projects, these drill bits can handle tasks such as drilling through stainless steel sheets or pipes. 2. Perfect for DIY enthusiasts looking to improve their home renovation projects, allowing for precise drilling in metal fixtures and installations. 3. Excellent for professional tradespeople who require reliable and efficient tools for everyday use in construction or maintenance tasks.