- Material and design: M35 cobalt-containing high quality twist drill bit with a double head design; one drill bit can be used as two; full grinding process delivers strong toughness, high hardness, high temperature tempering, sharper edges, wear resistance and higher efficiency. - Head and compatibility: The head uses a special grinding process to produce a cobalt-containing drill with excellent processing performance when drilling workpiece materials; the universal round handle is firmly clamped. - Geometry and performance: 135 degree rear edge angle, fully ground double head drill bit; wide U-shaped chip removal groove for quick chip removal; sharp blade, stable feeding, accurate positioning; not easy to slide; sharper cutting and faster drilling speed. - Compatibility: Metal drill bits suitable for hand drills, lithium electric drills, dual-purpose impact drills, milling machines, drills, magnetic drills, bench drills and milling machines. - Applications: Scope of application includes stainless steel, cast iron, cast steel, aluminum alloy, copper, and steel plate. Not suitable for tiles, stone, concrete and walls. - Use scenarios: Drilling stainless steel brackets for machinery or automotive parts; creating holes in aluminum alloy enclosures for electronics; drilling through steel plates for mounting brackets or frames.