Cle Line C21135 Reduced Shank Drill Bit Set, 8 Pc, 9 16 in to 1 in, 118 Deg Point, Black Oxide HSS SC6085B 1 2 x 3 8 NPT Female 1 2 x 3 8 NPT Female 4 Degrees F Certifications UL Listed Country of Origin Dominican Republic Number of Drill Bits 8 Cast Iron And Wood Point Type Conventional Point List Number 1813 Shank Type Round Flute Type Spiral Number of Flutes 2 Measurement System Fractional Inch Coolant Fed Non Coolant Through Material Machining High Speed Steel Finish Machining Black Oxide Shank Type Machining Straight Primary Material Application All Materials Drill Bit Point Type Conventional Point Number of Drill Bits 8 Material Grade Machining General Purpose Standards Not Rated Drill Bit Case Type Metal Index Drill Style Silver & Deming Drill Left Right Hand Right Helix Angle Maximum 34 Degrees Helix Angle Minimum 30 Degrees Country of Origin United States