These router bits are manufactured in solid carbide for long tool life, even when used in abrasive material. They are ideal for cutting double sided melamine or laminated materials, and produce a clean finish at high feed rates. These router bits are excellent for cutting the following materials: Laminate Laminated Plywood Melamine Melamine Particle Board MDF/HDF Oriented Strand Board (OSB) Particle Board Softwood/Hardwood Veneered Plywood Suitable for use with CNC Routers and shouldn't be used with a handheld router.-bg