This 3 X 12mm 1/4" Straight Metric Cutter 790840 is an ideal addition to anyone's tools, whether it be for the garden, garage or DIY. It features a TCT cutting edge, a strong, hardened steel shank, and is single-fluted for a smooth finish. It is suitable for general routing, grooving, rebating, dados, mortising, and edge trimming. The product comes with a lifetime warranty for all hand tools and a 3-year warranty for power tools, air & petrol tools. Silverline-Tooltime 790840 5055058135667.