This double ribbed ovolo style is an alternative to the rounding over cutter. If the cutter is lowered a top quirk can be produced. Specifications: • Shank Diameter: 1/4 • Dia Metric: 28.7 • Cut Length Metric: 12.7 • Cut Length Imperial: 1/2 • Overall Length Metric: 64 • Bearing Dia Metric: 9.5 • Bearing Dia Imperial: 3/8 • Radius 1 Metric: 4 • Radius 2 Metric: 4