DRILL CONDITION = NEW DRILL MANUFACTURER = PRECISION TWIST DRILL (USA) (PTD QC SERIES) PARABOLIC DRILLS GREATLY ENHANCE CHIP REMOVAL, AID COOLANT FLOW TO THE DRILL POINT AND DISSAPTE HEAT BUILD UP. HAVE A 38 DEGREE HELIX ANGLE, SELF CENTERING SPLIT POINT. NO NEED TO REDUCE FEED RATE OR WITHDRAW THE DRILL TO CLEAR THE CHIPS.
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