3 Piece Lot 5/8 Dia OSG 84401423 High Perforance 6 Flute Bundle
3 Piece Lot 5/8 Dia OSG 84401423 High Perforance 6 Flute Bundle. Not sure why but these list for $400, reviews say very long life. I got these from a tooling auction storage unit. Inspected and never used.