YG-1 D1601 High Speed Steel Split Point Aircraft Extension Drill Bit - Straight Shank, Slow Spiral, 135° Point, 5/16" x 6" (5-Pack) - Perfect for Aerospace, Metalworking & Precision Drilling Applications

Steam oxide finish. Made of high speed steel. Improved chip removal in most materials, especially in deep drilling applications.

Steam oxide finish

Made of high speed steel

Improved chip removal in most materials, especially in deep drilling applications

Country of origin Republic of Korea (South Korea)