Drill Bit, Type 130-AG, Reduced, 1-3/8 inch Diameter, 6 inch Length, 1/2 inch Diameter Shank, High Speed Steel Material, Gold and Black Oxide Finish, Three Flat Shank, 135 Deg Split Point, 118 Deg Point Angle, Split Point, External Coolant Delivery, Right Hand Spiral/Cut, No Double Margin, 3-1/4 inch Maximum Depth, 135 Deg Split Point, For Fast Penetration and Accurate Starting without a Center Punch, 1/Pack