Standard Pack = 1 piece(s). Coating = Titanium Nitride; Diameter = 1/2, 0.5 IN ; Center Cutting; Finish = TiN; Flute Length = 2 IN ; Flute Type = Coarse Pitch; Material = Cobalt; Number of Flutes = 4 IN ; Overall Length = 4 IN ; Shank Diameter = 4 IN ;