Self-guiding cutters with the facility to change the profile by fitting a larger bearing & varying the depth.
Supplied with two bearings.
The larger bearing removes the bottom quirk.

Specification:
D=29 mm
C=1/2 inch
C=12.7 mm
B=9.5 mm
B2=12.7 mm
R=4 mm
OL=60 mm
Shank Diameter=1/2 inch