The Porter-Cable 43319PC is a 3/8 inch keyhole (Solid Carbide). The keyhole is used for boring hole and routing to make a T-slot where wall mount is required for pictures.
Porter-Cable 43319PC 3/8 inch Keyhole (Solid Carbide)For boring hole and routing to make a T slot where wall mount is required for pictures, etc.Hole diameter is 3/8 inch with a neck cutting width 3/16 inch.
3/8 inch Keyhole (Solid Carbide)