* hot roll-forged flute with special heat treatment gives additional toughness with increased durability of the drill bit.
* 118 degree point angle design for general purpose.
* black oxide finish for greater resistance to wear.
* economical high speed steel bit for general drilling.
* for drilling in steel, cast steel, malleable iron, sintered metal, non-ferrous metal and plastic.

* 135 degree split point starts on contact in all types of metal, no walking or skating
* fully ground body, black oxide for the most accurate hole dimensions and high concentricity.
* hardened high speed steel body provides additional safeguard.
* for general using in steel, cast steel, malleable iron, sintered metal, non-ferrous metal and plastic.