Design combines two small wings that cut downward to shear the top edge for a splinter-free surface and two large wings that shear upward for a smooth finish. Produces raised panels for doors and paneling. Use 1/2 in H for 5/8 in stock. Use 5/8 in height for 3/4 in stock. Cuts all composite materials, plywood, hardwood and soft wood. Use on table mounted portable routers.