12 Pack Alfa Tools SM60412 Size L High-Speed Steel Screw Machine Drill Black

Alfa Tools SM60412 Size L High-Speed Steel Screw Machine Drill Black (12 Pack) - Twist Bits -. Black Oxide finish for general purpose drilling in a wide range of materials, equipment and operating conditions 。 L Diameter ( 0.2900"), 2-3/4" Overall Length 。 118 Degree Point Right hand Spiral Straight Shank 。 Manufactured to National Aerospace Standard 907, Type C 。 12 per Envelope 。 Alfa USA's Screw Machine length drill bits shorter length gives these drill bits increased rigidity resulting in less deflection, better hole accuracy and extended overall life. The 135 degree split point is self-centering and reduces thrust. Heavy duty construction performs well in both stationary and portable drilling in a broad range of materials in the iron and steel families. These drill bits are made in the USA and manufactured to National AEROSPACE Standard 907, Type C. 。 。 。

12 Pack Alfa Tools SM60412 Size L High-Speed Steel Screw Machine Drill Black