Premium-quality micrograin carbide tips are ground on specialized CNC equipment for an extra-fine finish with maximum sharpness and edge retention. Core box bit is used for cutting grooves in a variety of applications. The fully-hardened and tempered steel shank provides ultimate durability.Cuts rounded surface grooves used in a variety of applications including doors and columnsControl cut design helps minimize kickbackMicrograin carbide tips provide excellent wear resistance and long life