5Pcs Step Drill Bit Set for Metal, M35 Cobalt Unibit for Impact Driver Spiral Flute High Speed Steel Drill Bits for Stainless Steel and Hard Metals

Parts List:<br>5 x Hex Shank Spiral Step Drill Bit<br><br>Material: High Speed Steel<br>Color: Black<br>Size: 1.69/1.73/2.24/2.52/2.64inch<br>Handle diameter: 1/4 inch<br><br> <b>Upgrade Your Toolkit with Industrial Precision</b> Whether you are a professional HVAC technician, an electrician, or a DIY enthusiast, the <b>M35 Cobalt Step Drill Bit Set</b> is engineered to tackle the toughest materials. While standard Titanium-coated bits often fail on stainless steel, our 5% Cobalt HSS construction ensures long-lasting sharp edges even under high-heat conditions. <ul> <li><b>Faster, Cleaner Cuts:</b> The precision-ground spiral flute geometry minimizes vibration and "walking," ensuring every hole is perfectly round and burr-free.</li> <li><b>Maximum Versatility:</b> One 5-piece set saving space and time on the job. Perfect for sheet metal, aluminum, copper, and plastic.</li> <li><b>Built for Impact:</b> Optimized for use with modern 1/4" impact drivers and high-speed rotary drills.</li> </ul> <b>Frequently Asked Questions:</b> <b>Q: Can this drill through stainless steel?</b> A: Yes, the M35 Cobalt steel is specifically designed for high-hardness metals. <b>Q: Is the shank compatible with my quick-change chuck?</b> A: Absolutely. The universal 1/4-inch hex shank fits all standard quick-change chucks and drill presses.

• 【Industrial Grade M35 Cobalt Steel】 - Crafted from premium HSS M35 Cobalt steel (5% Cobalt) for superior heat and abrasion resistance. Specially designed for cutting through hard metals like stainless steel, cast iron, and high-temperature alloys with ease.
• 【Double Spiral Flute Efficiency】 - Features a flute spiral design that clears chips, dust, and debris significantly faster than straight flutes. This prevents clogging and reduces friction for a smoother, cooler, and faster drilling experience.
• 【Universal 1/4" Hex Shank Compatibility】 - The standard 1/4-inch hex shank ensures a secure, no-slip fit into all major brands of power drills and impact drivers. Provides higher torque and stability when boring through thick metal sheets.
• 【Permanent nitride treated Sizes】 - Each step is clearly marked with high-visibility nitride treated that will not wear off after heavy use. The kit includes 5 nitride treated step drill bits with diameters : 1/4 inch , 3/8 inch , 1/2 inch , 5/8 inch , and 3/4 inch .
• 【High Strength Blow Molded Case】 - Comes in a protective case. Keeps your unibits organized, prevents dulling from contact, and is compact enough to fit into any job site tool bag.