American Sun USA made 3/4" 30 TAPER END MILL Endmill HOLDER ARBOR #N30E750 Wilton High mechanical advantage due to

High mechanical advantage due to off-set rivet and cutting edge geometry reducing effort

New Old Stock  Armstrong hex sockets

Jaws Center-Ground for Absolute Straightness and Alignment

any version could be used - sometime placing in a N-S-N-S arrangement may give a small increase in performance as the magnets link their magnetism in a positive way

New Old Stock British Made 5/16" / 8mm IMPERIAL TOOLS Steel letter stamps for Machinists & Toolmakers

American Sun USA made 3/4" 30 TAPER END MILL Endmill HOLDER ARBOR #N30E750 Wilton High mechanical advantage due toAmerican Sun Inc USA made (a small American firm that made the highest quality tooling) made New AMERICAN SUN USA 3 4" 30 TAPER END MILL HOLDER, No. N30E500. Premium quality.