New Old Stock USA Made NICHOLSON 12" Round SMOOTH Tapered File DSL These cone-shaped bits have steps

These cone-shaped bits have steps of increasing diameter marked along their cutting head

These gages have been in storage for decades and may have some dried packing oil residue that needs to be removed with some solvent then they would need some light machine oil

the second photo shows label from bulk package for information purposes only the box is not included

American Sun 3/8" Tap

it is not included

New Old Stock USA Made NICHOLSON 12" Round SMOOTH Tapered File DSL These cone-shaped bits have stepsNew Old Stock USA Made NICHOLSON 12" Round SMOOTH Tapered ( measures about 1 2" at its biggest diameter) File . Premium USA quality made decades ago before production was moved out of the US. The 12" length does not include the tang. Hard to find!