3 Piece High Speed Steel Spiral Grooved Step Drill Bit for Metal Sheet Aluminum

Spiral Grooved Design - The step drill bit for metal is designed with two-flute spiral. which can deburr chips faster and smooth drilling holes. The step drill bits have 118° split point tip, which can accelerate cutting speed and while preventing angled walking away from center. The step drill will long-lasting and efficient.
HSS Titanium Coating - Our step drill bit is made of high-speed steel material, coated by titanium nitride ensures the step drill bits has great sharpness and durability. With the coating the step bit is great for fast drilling hole on aluminum, wood, copper, stainless steel, plastic and other metal sheet.
Multiple Application - Our step drill bit set can process different diameter holes to meet your needs. Great for drilling holes in plastic, aluminum, iron, wood etc (Not recommended for stainless steel or any other harder metal). The 1/4-inch hex shank fits easily and securely into all power tools.
Multiple Size Include - Our step drill bit set come with 3 unib

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