1/4"x12" Cobalt Aircraft Extension Drill AB2284-67 End diameter 13

End diameter 13

WATER NECK STYLE: 45°

Air velocity 45m/s (53m/s when in turbo mode) Overall Length 948mm

0mm T/S Machine Reamer Flute Length 133mm Overall Length 260mm Morse Taper #3

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1/4"x12" Cobalt Aircraft Extension Drill AB2284-67 End diameter 13National Aerospace Standard 907, Type J Cobalt Drills, 6" OAL with Jobber Drill Flute Length, Cobalt Extension Drill, Cobalt HSS, Surface Treated, 135 Split Point These cobalt jobbers length drills are used for drilling in tough, high tensile strength materials like stainless steels, titanium and inconel. They are made of cobalt high speed steel, with heavy duty flute construction and 135 split point.