Part # 57-359MD Onsrud Router Bit for cutting soft/hard woods & wood composite.
Professional quality router bit for CNC machines. 
It is a solid Carbide Bit with 2 flutes, downcut, Marathon Coated. 
Cutting Diameter - 1/2" 
Shank Diameter - 1/2" 
Over all length - 3" 
Length of Cut - 7/8"