The Porter-Cable 43247PC is a 3-Wing Slot Cutter Router Bit. The saw blade style action provides a smooth cut and delivers effective chip removal. A common use for slotting cutters is the installation of T-moldings, weather stripping and tongued wood edgings. Slotting cutter is also used to join wood by cutting slots for reinforcing splines. Three-wing slotting cutter Features:Kerf: 1/16-inchCut Diameter: 1-7/8-inchArbor Hole: 5/16-inchCarbide-tipped designWhat"s In the Box:Porter-Cable 43247PC 3-Wing Slot Cutter Router Bit