These router cutters from Amana are designed to cut decorate V-grooves and lettering, perfect for sign making. With an edge guide, you can use them to chamfer and cut bevel edges. These router bits are excellent for cutting the following materials: 20lbs High Density Urethane Acrylic Composites Composite Decking Foam Laminate MDF/HDF Melamine Plywood PVC Plastic Sign Board Solid Surface Veneered Plywood Wood Xanita® Board Suitable for use with CNC Routers, handheld routers and router tables.