3/32" SE shape carbide burr, single cut, oval shape.
A rotary burr for deburring, weld dressing, shaping and blending in a die grinder or air tool. This one cuts 3/32" diameter with 1/8" of cut on a 3/32" shank, 1-1/2" overall.
The single cut has one row of flutes, which produces long chips and cuts fast — it suits steel and harder ferrous metals and leaves a rougher surface.