Description: 100% quality and Brand new. Material: High speed steel. Color :Silver Tone Suitable for processing cast iron, steel, copper and aluminum,conventional hardness of stainless steel, mold steel and other materials. Mainly processing the installation of bolts (hexagon) of the counterbores. High precision, high production efficiency. Specification: Size:Approx. 17.6*12*75mm/ 0.69*0.47*2.95inch Package Includes: 1 xCountersink End Mill