PORTER-CABLE 43702PC Straight Router Bit
The Porter-Cable 43702PC Hinge Mortising Cutter is designed for mortising doors to accept locks, lock face plates, hinges, and for general stock removal. The 43703PC requires a shank sold separately for use (Porter-Cable models 43736 or 43737).  Fits all 1/4-Inch to 28 threaded shanks for superior versatility.   Carbide-tipped for longer life and added durability.