45946 Carbide Tipped Core Box 3/4 Radius x 1-1/2 Dia x 1-1/4 x 1/2 Inch Shank Extra Deep

Cut much deeper flutes than possible with a regular core box bit. Perfect for making flutes on CNC machines.
Excellent for cutting:  

High Density Urethane (HDU Board)
Laminate
MDF
Softwood/Hardwood
Veneered Plywood

Maximum RPM 18,000.
Use in a table-mounted router. Not for use in a handheld router!