Standard Pack = 1 piece(s). Cutter Diameter = 1/2 IN ; Flat = 0.0035 IN ; Minimum Pitch = 20 IN ; Number of Flutes = 5 ; Pitch = 11 to 32 IN ; Shank Diameter = 5/16 IN ; Shank Length = 2 1/2 IN ; Type = Brazed Thread Mills ;