6mm Cobalt Drill Bit Set, M35 Twist HSS Drill Bits Straight Shank, 6mm High Speed Steel Drill Bits for Drilling in Hard Metal, Stainless Steel, Cast Iron

?10PCS 6mm Cobalt Drill Bits?10pcs -(Dia 6mm) x (Length 103mm) metal drill bits. This drill fits most power drills on the market today and comes with a portable plastic case for easy storage and organization. ?M35 Cobalt High Speed ??Steel?Made of M35 Cobalt Steel, Cobalt is added to form a hardened alloy, measuring Rockwell hardness up to 67, faster cutting speed, longer service life, up to twelve times more drill bits compared to ordinary high speed steel. HSS bit set, harder than the 4241 HSS used in other similar bit sets. These bits also contain 5% cobalt for improved wear resistance and durability. ?Full Grinding Process and 135° Split Point?Fully ground helical flute design removes particles quickly, reducing friction and heat for faster, cooler drilling performance. The 135° straight shank split point prevents walking, making drilling more precise and faster. ?Multipurpose?Perfect for cutting hard metals such as stainless steel, steel, sheet metal and cast iron, as well as plastics, aluminum alloys, wood and other softer metals. Pay attention to speed, pressure and heat control when drilling. ?Quality Service?If you have any questions about our diamond bit set or are not satisfied with the product, please feel free to contact us.