MOS metal drill bits are designed for drilling steel, cast iron, thin aluminum, plastic, etc. Suitable for both professionals and DIY enthusiasts! The drill bits are manufactured using a high-quality production method — Fully Ground, which increases drilling precision and ensures maximum efficient chip removal. High-quality high-speed steel with increased content of tungsten, molybdenum, and vanadium is used in production, which significantly increases the service life and strength of the drill bits. Thanks to the professional 135-degree sharpening angle, various materials can be drilled without pre-center drilling. The cutting parts have increased hardness of HRC 61–64. The drill bits retain their sharpness well, are designed for intensive operation and high loads. Comply with GOST 10902-77 and the European standard DIN338.