Comparison : Item # D4111820, Center-Cutting 4-Flute Cobalt Steel Double End End Mills, USA
Item # D4111822, Center-Cutting 4-Flute Cobalt Steel Double End End Mills, USA
Item # D41911824, Center-Cutting 4-Flute Cobalt Steel Double End End Mills, USA
Item # D4111826, Center-Cutting 4-Flute Cobalt Steel Double End End Mills, USA
Item # D4111828, Center-Cutting 4-Flute Cobalt Steel Double End End Mills, USA