1/16 - 3/8 HSS Split Point Jobber Drill Bit Set D/A21J-SP-SET

Size: Set, Material: High Speed Steel, Finish: Black Oxide, Shank Type: Round, Style: Jobber, Cutting Angle: 135, Point Type: Split Point, Number of Flutes: 2, Cutting Direction: Right Hand, Pieces in Set: 21 Manufactured to National Aerospace Standard 907, these drills are ideal for portable or machine drilling of low tensile strength alloy materials. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow. The 135 degree split point is self-centering and reduces thrust., Premium Grade Steel