.Step Drill Bit Set 4 Flute 1/4 Inch Shank M35 Cobalt Pagoda Drill Bit Kit For

--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n\nFeature: \n 1. DRILL BIT SET: The kit includes a drill bit and 5 step drill bits, with specifications of 1/4 to 1 3/8 inch, 3/16 to 7/8 inch, 1/4 to 3/4 inch, 3/16 to 1/2 inch, 1/8 to 1/2 inch.\n2. 4 FLUTE: These step drill bits have four spiral flutes, the four cutting design ensures and smoother cutting.\n3. 1/4 INCH SHANK: These drill bits have standard 1/4 inch shank that can be seamlessly connected to the electric drill, easy to install.\n4. HIGH HARDNESS: The step bits are made of M35 and cobalt, with a surface hardness of 89HRC, and can cut harder materials.\n5. MULTI PURPOSE: These drill bits are very suitable for stainless steel, metal plates, wood, plastic, aluminum plates, copper and other metal plates. \n\nSpecification: \n\nItem Type: Step Drill Bit Set\nMaterial: M35, Cobalt\nShank Diameter: 1/4 Inch\nHole Diameter:\n1. 1/4 to 1-3/8 inch\n2. 3/16 to 1/4 to 5/16 to 3/8 to 7/16 to 1/2 to 9/16 to -