General description FLITI 10pcs M35 High Speed Steel Cobalt Gold Twist Drill Bit Set is designed for professional quality drilling across a wide range of materials. Made from M35 high speed steel with 5% cobalt, these drill bits are ideal for drilling stainless steel, hard steels, cast iron, copper, aluminum, wood, and plastics. The set includes 10 pieces, each with a diameter of 5mm and a total length of 86mm, making it perfect for both DIY projects and general construction work. Technical specifications Material: M35 high speed steel with 5% cobalt Drill bit diameter: 5mm Flute length: 52mm Total length: 86mm 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 Ideal for drilling