Shank mounted bearing follows template mounted on board surface.
It is advisable that the template is at least 5mm thicker than the cutter.

Specification:
D=22 mm
C=1/2 inch
C=12.7 mm
B=22 mm
R=4 mm
R2=5.5 mm
OL=52 mm
Shank Diameter=1/4 inch