PCD router bits are specialist router cutters that are designed for use with CNC or NC router, or fixed hear routers with an auto-feed, they cannot usually be used in hand-held routers, expect for the PDC bit for Gemstone worktop. PCD stands for Polycrystalline diamond. These industrial diamonds are bonded onto tungsten carbide tips and are particularly wear-resistant, which means they will outlast their TCT equivalents many times over and will provide an accuracy of cut throughout their long life. They are particularly suited to specialist, and high-end, production applications and can be used with various materials including hardwoods, MDF, plywood, hardboard, particleboard that’s laminated or veneered, and even solid laminate.