4F NCC XLng E/M HSS 5/16X 3/8x2x3-3/4
converting to Center Cutting - part number 5-424-010 -- currently: 4 Flute Non-Center Cutting Extra Long Length TMX End Mill, HSS, 5/16" cutting diameter x 3/8" shank diameter x 2" length of cut (LOC) x 3-3/4" overall length (OAL)
4F NCC XLng E/M HSS 3/8x3/8x2-1/2x4-1/4
converting to Center Cutting - part number 5-424-015 -- currently: 4 Flute Non-Center Cutting Extra Long Length TMX End Mill, HSS, 3/8" cutting diameter x 3/8" shank diameter x 2-1/2" length of cut (LOC) x 4-1/4" overall length (OAL)