Features:
Material: HSS / High Speed Steel 4241
Hexa-Flatted Shank: fits into power tools chuck securely and eliminates slip.
Surface Treatment: Titanium coated. Classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.
Easy Drilling: Two-fluted design provides faster, smoother cutting;Provided with small pressure and the sets can cut through wood, sheet metal, steel and other surfaces.
Ideal For DIY: Tiny Home and General Building / Engineering Using(Without the use of center punch, easy to break, a step drill specifications apply.)

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