Standard Pack = 1 piece(s). Flute Length = 4 7/16 IN ; Flute Type = Helical Flute ; Large End Diameter = 0.422 IN ; Material = High Speed Steel ; Overall Length = 6 5/16 IN ; Shank Type = Straight Shank ; Size = 7 IN ; Size Type = Wire Gage Size ; Small End Diameter = 0.3297 IN ;