Standard Pack = 1 piece(s). Diameter = 0.2 Inch ; Tip Width = 0.024 Inch ; Neck Length = 0.75 Inch ; Flutes = 4 Inch ; Thread Size = 5/16-14 Inch ; Shank Diameter = 0.25 Inch ; Overall Length = 2.5 Inch ; Type = Acme ;