Comparison : Item # D411040160, 60° HSS 3-Flute Countersink Center Reamers, (Imported)
Item # D411040240, 60° HSS 3-Flute Countersink Center Reamers, (Imported)
Item # D411040320, 60° HSS 3-Flute Countersink Center Reamers, (Imported)
Item # D411040400, 60° HSS 3-Flute Countersink Center Reamers, (Imported)
Item # D411040480, 60° HSS 3-Flute Countersink Center Reamers, (Imported)