45944 Carbide Tipped Core Box 5/8 Radius x 1-1/4 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 20,000.
Use in a table-mounted router. Not for use in a handheld router!