The Europa Tools Woodruff Cutter in HSS-E cobalt is built for precise keyseat work in woodworking, delivering reliable performance for professionals and serious hobbyists. Its cobalt-infused high-speed steel promotes longer tool life and consistent cuts across demanding tasks. Material: HSS-E cobalt for exceptional hardness, heat resistance, and wear resistance to extend tool life. Size: Cutting diameter 38.5 mm with a 7 mm shank to fit standard setups and tooling systems. Profile: Semi-circular cutting edge with a flat bottom that creates accurate keyseat slots in workpieces. Cutting Performance: Sharp edges and efficient chip evacuation for clean, precise cuts in a variety of woods. Reliability: The 158116 model is known for dependable precision and consistent results over time. This Woodruff cutter is ideal for applications such as gear and pulley mounting, dowel fits, and other joinery tasks where exact slot dimensions are critical. The cobalt alloy helps maintain edge geometry during extended sessions, reducing rework and improving finish quality. Use it to achieve snug, well-aligned components in cabinets, furniture, and custom wood projects, where precision elevates the overall fit and function.