The Europa Tools Woodruff Cutter with HSS-E cobalt delivers durable, precise keyseat slots for woodworking projects. Designed for professionals and serious hobbyists, it combines rugged performance with clean, repeatable cuts. Material: HSS-E cobalt construction provides exceptional hardness, heat resistance, and wear resistance for longer tool life. Cutting profile: Semi-circular cutting edge with a flat bottom creates accurate keyseat slots and stable cuts. Size: Cutting diameter 13.5 mm with a 2 mm slot width, suitable for standard keyseat applications. Precision and chip evacuation: Sharp cutting edges and efficient chip evacuation produce clean, precise results and reduce heat buildup. Reliability: Model 158116 is known for consistent performance and dependable results across woodworking tasks. Applications: Ideal for woodworking joinery, cabinetry, and mechanical assemblies requiring precise keyseats. Using this Woodruff Cutter helps you achieve accurate fits with fewer passes, minimizes tear-out, and speeds up assemblies that rely on keyseat slots. The cobalt-enhanced steel maintains edge sharpness under higher temperatures, delivering repeatable cuts project after project, so you can trust your work without rework.