Bosch Power Tools Carbide-Tipped Pilot Panel Router Bits w/Drills-Through Points Premium quality micrograin carbide tips are ground on specialized CNC equipment. Extra-fine finish with maximum sharpness and edge retention. Pilot panel bit has a drill-through point that plunges through the material. Used for window and door cutouts in abrasive insulation materials, plywood and paneling. The fully hardened and tempered steel shank provides enhanced durability Pack of 1