Comparison : Item # D41131050, Non Center-Cutting 4-Flute HSS Double End End Mills, USA
Item # D41131060, Non Center-Cutting 4-Flute HSS Double End End Mills, USA
Item # D41131070, Non Center-Cutting 4-Flute HSS Double End End Mills, USA
Item # D419131080, Non Center-Cutting 4-Flute HSS Double End End Mills, USA
Item # D41131090, Non Center-Cutting 4-Flute HSS Double End End Mills, USA