Standard Pack = 1 piece(s). Decimal Equivalent = 0.3125 ; Flute Length = 1-1/2 IN ; Flute Type = Full Length ; Material = Carbide Tipped ; Number of Flutes = 4 ; Overall Length = 6 IN ; Shank Diameter = .2782 - .2792 IN ; Shank Type = Full Length Straight Shank for Steel ; Size = 5/16 IN ; Size Type = Fractional Size ;