0.5000" (1/2) Reamer DIA x 0.3125" (5/16) Minor DIA x 5.1250" Margin Length x 2 Morse Taper, High Speed Steel , 5 Fl - Black Oxide
0.5000" (1/2) Reamer DIA x 0.3125" (5/16) Minor DIA x 5.1250" Margin Length x 2 Morse Taper, High Speed Steel Taper Shank Bridge Reamer, 5 Flutes, Black Oxide