The Kango 4mm Cobalt Drill Bit is designed to enhance your drill’s performance for drilling into stainless steel and hard metals. It’s also suitable for drilling into plastic and wood. Constructed with an M35 5% cobalt blend, this Drill Bit is designed to withstand extreme levels of heat and abrasion. The tip has a 135° split point designed to prevent the Drill Bit from wandering while providing more precision on startup. Four cutting chamfers on the tip are designed to support faster drill speeds, produce cleaner holes and provide maximum material contact. The tapered core design provides additional strength and helps prevent breakage. Its rapid eject flute shape is efficient at ejecting chips and material and supports faster drilling speeds. Available in a range of sizes from 2mm-13mm.