THREE Ea. Individually Packaged Long Lasting Production Quality (1/8" Diameter Shaft/Shank,) Cone Shaped Head Burr/Cutter.

The Head is about a 0.275 Diameter tapered down to about a 0.175 Diameter.
{About 1/4" down to 3/16" Head with a 1/8" shaft.}
  
Tungsten Carbide Cutter, US Made.