Industrial quality aluminum cutting router bits are made by Amana Tool, the leading manufacturers of cutting tools. Aluminum cutting router bits by Amana feature outstanding tool longevity, a tendency to stay sharper, mirror like carbide finish, excellent carbide brazing, a broad selection of sizes and most importantly quality of cut. 8-Pc CNC Aluminum Cutting Solid Carbide Spiral O Flute ZrN Coated Router Bit Collection contains bits that are specifically designed for a variety CNC machining applications. Continuous improvements in cutting performance, the unique carbide polishing process, tool design & geometry make these router bits perfect for routing signs and displays. Excellent for: ALPOLIC Copper Composite Material (CCM), Alucobond, Aluminum, Aluminum 5052, Aluminum 6061, Aluminum Alloys (Al-Alloy), Aluminum Composite Materials (ACM), Aluminum Composite Panel (ACP), Alupanel, Brass, Copper, Dibond, Durabond, e-panel, Etalbond, Fomex with Aluminum Face, Gold, Non-Ferrous Metals, Plastic, Silver, Solid Surface, Titanium Composite Material (TCM), Wood. Set #AMS-160-Z Includes the Following Tools: 51470-Z, 51406-Z, 51474-Z, 51454-Z, 51408-Z, 51402-Z, 51502-Z, 51480-Z, RB-102 (2 Included).