General description Professional quality M35 high-speed steel drill bits with 5% cobalt, designed for drilling a wide range of materials including stainless steel, hard steels, cast iron, copper, aluminum, hard plastics, and wood. This 10-piece set is ideal for both DIY projects and general construction work, ensuring durability and a longer service life. Technical specifications Material: M35 high-speed steel with 5% cobalt Drill diameter: 5 mm Flute length: 52 mm Total length: 86 mm Angle point: 135 degrees Groove type: spiral Shank type: straight shank Compatibility and accessories Compatible with standard chucks and regular round collets Suitable for handheld devices such as lithium drills, hand drills, and impact drills Can be used with bench drills, magnetic drills, drilling machines, milling machines, and machining centers Usage For maximum efficiency, it is recommended to operate at a speed of 1,500 rpm or higher. The 135° slotted tips are self-centering, which reduces thrust