Cobalt Twist Drill Bits, High Speed Steel, for Hardened Metal, Stainless Steel

Premium HSS Titanium Coating - Industry grade 4341 high-speed steel drill bit set, harder than 4241 HSS used in other similar drill bit sets.  Fully Ground Process - Fully ground spiral groove design clears particles quickly and decreases friction and heat for a faster and cooler drilling performance.  135° Split Point - 135° split point with a straight shank prevents walking and makes drilling precise and faster. No center punch is needed. Multiple Application - Small Drill bits for soft metal, wood, plastic, steel within 5mm thickness, aluminum alloy, and other soft metals. Well-organized - Fitting the majority of power drills currently on the market and come with a portable plastic case for easy storage and organization. Various Size Available - 10Pcs 1/4"; 5Pcs 3/8"; 10Pcs 3/16"; 13Pcs 1/16" -1/4"; 16Pcs 1/16" -1/4".