Drills Holes Of Various Sizes Without Changing Bits!
This Cobalt Step Drill Bits Set can drill screw holes while staying put on the same axis.
The large bit has a 3-sided shank and the small bits have hex shank to prevent slip in a drill chuck.
It is self-starting and does not need a pilot hole, making it extremely convenient to use.
It operates automatically as you drill holes through the materials.
Got tired of replacing different sizes' drill bits when working? Well, how about our step drill bits? 50 sizes in 5 pcs, saving your time is our items' first goal.
Two-Flute Design and 3-sided shank design. 3-sided shank design prevents drill bits from slipping; 2-flute design provides a faster and smoother cutting, and easy to read rings, 1.5 times faster than basic drill bits. Keep the drill bit clean..
Made of super strong high speed steel together will titanium coating, which lasts the bit a long service life. Let you feel drill holes on metal like a hot knife through butter..
Wide Applicatioins. The sharpness and titanium coating ensures easily cut through most sheet metal, aluminum sheets, wood board, plastic board, and some other materials with ease..