amoolo M35 HSS Cobalt Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron (Pack of 10)

10pcs 7/8" Cobalt Drill Bits:10pcs 7/8" Metal Drill Bits This drill bit fits most electric drills currently on the market. M35 Cobalt HSS - Industrial grade M35 HSS drill bit set, much harder than HSS drill bits used in other similar drill sets. These drill bits contain 5% cobalt, which increases wear resistance and durability. FULLY GRINDED PROCESS & 135° Separation Point - Fully ground spiral groove design removes particles quickly, reduces friction and heat for faster and cooler drilling performance. 135° split point with straight shank to prevent walking and make drilling accurate and faster. No center punch required. MULTIPLE USES Perfectly suitable for cutting hard metals such as stainless steel, steel, sheet metal and cast iron as well as plastic, aluminum alloy, wood and other softer metals. ✔ Pay attention to the control of speed, pressure and heat during drilling. 【90 DAY GUARANTEE】If you are not completely satisfied for any reason, please contact us for a 100% refund or replacement.