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* 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. |