Down-cut spirals are ideal for routing small workpieces or for holding workpieces secure in vacuum jigs.
Down-cut pushes woodchips below the work.
Two flute.

Specification:
D=1/8 inch
D=3.2 mm
C=1/2 inch
C=12.7 mm
OL=50.8 mm
Shank Diameter=1/4 inch