HSS JOBBER TWIST DRILL BITS ALL SIZES (52-80) (.34MM - 1.61MM)
MADE OF HIGHEST QUALITY STEEL, CAREFULLY TEMPERED AND ACCURATELY GROUND TO SIZE.
ALL DRILLS HAVE STRAIGHT SHANKS AND ARE PERFECTLY FINISHED TO ASSURE QUICK, SMOOTH, AND CLEAN DRILLING.
HEAT TREATED TO A HARDNESS OF 63-65 HRC
PRECISION GROUND TOLERANCE OF +0.0000 TO -0.0003"
CAN BE USED ON ALL METALS
SOLD IN PACKS OF 10
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ALL DRILLS HAVE STRAIGHT SHANKS AND ARE PERFECTLY FINISHED TO ASSURE QUICK, SMOOTH, AND CLEAN DRILLING.
HEAT TREATED TO A HARDNESS OF 63-65 HRC
PRECISION GROUND TOLERANCE OF +0.0000 TO -0.0003"
CAN BE USED ON ALL METALS
SOLD IN PACKS OF 10
Heat treated to a hardness of 63–65 HRC and precision-ground to a tolerance of +0.0000 to –0.0003". Can be used on all metals. - See more at: http://www.gesswein.com/p-3955-blue-ribbon-high-speed-twist-drills.aspx#sthash.rD90PP8q.dpuf