3PCS HSS Spiral Step Drill Bit Sets, SS SHOVAN 4-Flute Metal Drill Bits, 1/4" Hex Shank, Metric 4-32mm Cone Cutter, Hole Cutter for Sheet Metal, Plastic, Steel Plate

UPGRADE PATENT SPIRAL FOUR FLUTE - Our 4-flute design prevents the metal filler from splashing everywhere, and removes the swarf easily, so as to achieve smoother drilling.

118° X TYPE OPENINGS DESIGN - Ensure a faster and smoother drilling; 1/4"(6.35mm) hex shank design eliminate slipping in drill chuck, prefect for drilling holes in plastic, aluminum, copper, wood, sheet metal, mold steel and other surfaces.

DURABLE TITANIUM COATED & HSS 4341 - The step drill bit is made of upgraded 4341 high speed steel. Coated by titanium, improve the wear and corrosion resistance.

MULTIFUNCTIONAL CONE DRILL BIT - Not only expanding holes, but also deburring, chamfering and cutting. Applied to impact drivers, drill press, and power drills/drivers.

WHAT YOU GET - SS SHOVAN 3PCS step drill bits(contain 3 size: 4-12mm, 4-20mm and 4-32 mm) and a canvas bag. It is an indispensable tool for carrying out precision work with good control of the hole diameter. Perfect for DIY lover!