#54 HSS SCREW MACHINE DRILL
Alfa USA Screw Machine Length SWG Number Drill Bit, #54 Diameter, 0.0550 Decimal Equivalent, 5/8" Flute Length, 1-5/8" Overall Length, High Speed Steel, 135 degree Black Oxide Finish, Straight Shank, Right hand Spiral, NAS 907 Type C, Heavy Duty, Made in USA, 12 per Envelope