Cobalt M35 Material: Better than HSS M2, more sharp and durable, hardness is up to HRC67, ideal for industrial use
Aluminum Titanium Nitrite Coating：Better resistance to high temperature and oxidation, resulting in longer bit life
Heavy Duty 135 Degree Split Point: No need pilot hole and help reduce walking, remain better concentricity for precise drilling result
Non-slip tri-flat Shank: Triple shank have a tighter grip than round shank and are particularly suited to the machining of hard materials in industry
Versatile Application: Ideal for drilling through stainless steel, cast iron, zinc alloy, steel plate, copper, aluminum, titanium, hardwood and so on
Packaged properly: the bit are 5/8" diameter, 1/2 tri-flat shank, 6 inches in overall length, in a plastic storage case with a sticker indicating the size
More suggestion: Use lubricant for cutting or cooling to make the cutting process easier, improve smoothness and enhance dimensional accuracy, This can also help extend the service life of the tool. Usually no need special maintenance
