Length Group Regular Cutting Edge Material HSS Coolant No Measurement Type Fractional Cutting Depth 3-1/8 inch Coating Black|Gold Shank Type 3-Flats Straight 15/32 High Speed Steel Ambore Mechanic Length Drill - 3/8 inch Shank #1383 HSS-GP Reduced Shank Tool Diameter 15/32 inch O.A.Length 4-3/4 inch Decimal Equivalent 0.4688 inch Reduced Shank HSS-GP Morse Cutting Tools