* 2 Cutting Point: Double end drill bits (2 Cutting Point) enable drilling for much longer life and more economic in application.
* Cutting Point Angle: With 135 degree split point drill bits, prevents drill from walking, better self-centering and reduce thrust.
* Flute Type: Spiral twist flute keeps the fast chips-removing and easy penetrating.
* Easy to Carry: Our cobalt cutting drill bit is small and lightweight, can put it in your pocket, easy to carry and convenient to apply.
* Straight Shank Drill Bits: A plastic case with 10Pcs drill bits, 7 sizes for you to choose: 3mm/0.12", 3.2mm/0.125", 3.5mm/0.14", 4mm/0.16", 4.2mm/0.165", 5mm/0.196", 5.2mm/0.2"

5% Cobalt Drill Bits:
Cobalt increases the strength of the steel makes it more heat-resistant, the important factor for drilling hard materials, because the friction of metal against metal can produce high temperatures that damage the material or the drill bit.

Useful Tool:
Our Hss co drill bits can do great works of drilling in various of metal material in DIY Home use or industry use. Double bits, and Bits are precision ground, for drilling holes in many different materials, such as Stainless steel, general steel, metal, iron, copper, aluminum, plastic...