Patent pending 4-flute design for fast dust removal Carbide-tipped bit heads are harder, tougher and more resistant to extreme loads for longer tool life The set includes one each HC2010 (3/16” X 2” X 4), HC2040 (1/4” X 2” X 4”), HC2041 (1/4” X 4” X 6”), HC2061 (3/8” X 4” X 6’) and HC2081 (1/2” X 4” X 6”) Storage case for easy access, organizing and portability