#31 HSS Aircraft Extension Drill Bit DR64231

Clarkson-Osborn

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HSS

Black oxide finish for increased wear resistance and added lubricity

135° Degree split point for fast penetration and accurate starting (self-centering) which eliminates "walking" and reduces the thrust force needed

Longer overall length but shorter flute length for maximum rigidity

Used where extra reach is required or for drilling holes in hard-to-reach places

Ideal for a wide range of materials

Clarkson Osborn Catalog

Diameter #31

Flute length 1-5/8"

Overall length 6"

Package quantity/sold as each 1

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