Product Overview
Aircraft Extension SWG Number Drill Bit, #21 Diameter, 0.1590 Decimal Equivalent, 2-1/8" Flute Length, 12" Overall Length, M42 Cobalt High Speed Steel, Straw Gold Finish, 135° Split Point, Straight Shank, Heavy Duty, Right Hand Spiral, 6 per Envelope. Alfa Tools AECO60751 #21 SWG 12 Cobalt Aircraft Extension Drill
