Car reamer with left hand slow spiral flutes and a reduced Tri-flats shank, nominal diameter 0.6250" (5/8") with an overall length of 6.3/8", a flute length of 4.1/4" and 3.3/16" starting taper, according to ANSI standard for enlarging holes or correcting misalignments, HSS with steam tempered-bronze finish for machining free machining and plain carbon steel, copper or copper alloys