These are genuine Summa, general use, multi-purpose router bits for the Summa F Series Flatbed Cutters. Ideal for routing aluminum, composites, wood, and PVC. The coating allows for the cutting of aluminum composites in a single pass, at speeds of up to 150 mm/s. Sold as a pack of 3.For use with the Summa F Series Standard Routing System and the Summa F Series High Frequency Routing System.