Foret Alpen HSS Super. - Diameter: 10.0 mm. - Precision slip, minimal tolerances, maximum concentricity precision. - Precise milling thanks to its optimally sharpened tip. - Made from high-quality steel. - Break-resistant due to controlled heat treatment. - Suitable for construction steels, easy-cut steels, unalloyed steels, copper, brass, aluminum, and plastic.