This double ribbed ovolo style is an alternative to the rounding over cutter. If the cutter is lowered, a top quirk can be produced.
Dimensions:
C=11/16 inch
C=17.5 mm
B=9.5 mm
B2=12.7 mm
R=5.5 mm
R2=5.5 mm
Shank Diameter=1/4 inch
Shank Diameter: 1/4
Grade: TCT
Cut Length Imperial: 11/16
Cut Length Metric: 17.5
Bearing Diameter Metric: 9.5