Combination Drill and Tap Bit Set, One-Step Drilling, Tapping, and Deburring/Countersinking for Stainless Steel, Aluminum,Copper, Plastic, Mild Steel

1-STEP DRILL&TAP SET - Allows you to complete hole drilling, tapping, and deburring/countersinking in one simple operation using a power drill to save time and minimize labor TAPS A VARIETY OF MATERIAL - Simplifies the process of tapping up to 10-gauge metal and creates holes in a variety of materials including stainless steel, aluminum, brass, copper, plastic, and mild steel HEAVY-DUTY CONSTRUCTION - Hardened high-speed steel withstands heavy-duty use on the jobsite and offers a longer life than carbon-steel tools TiAlN COATING - With 89HRC surface hardness, harder materials can be cut and higher cutting speeds can be achieved. BACK-TAPERED AND HEX SHANK: Unique back-tapered design protects against thread damage from over-drilling, while the sturdy hex shank ensures a strong connection to the drill chuck