AMOOLO Cobalt Drill Bit Set 31Pcs (1/16" 1/2"), M35 High Speed Steel Metal Bits Jobber Length for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood

PREMIUM QUALITY: Made of industrial grade M35 (6542 high speed steel), cobalt spiral drills are harder than 4241/4341 HSS in other similar pieces, ideal for heavy drills. It contains 5% cobalt material, which increases wear resistance and durability. 【Widely Used 20 Sizes】A complete combination set with 31 job length industrial drill for metal holes (1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/11/1. 62.5 cm, 3/16 inches, 13/64 inches, 7/32 inches, 15/64 inches, 1/4 inches, 17/64 inches, 9/32 inches, 5/16 inches, 11/32 inches, 3/8 inches, 0.5 cm, 1/5 1 cm). They fit most drill machines on the market and come with a portable plastic case for easy storage and organization. 【Precise and Efficient Drilling Performance】✔ Fully ground spiral groove design removes particles quickly, reduces friction and heat for faster and cooler drilling performance. ✔ 135° split point with round straight axis prevents walking and makes drilling more accurate and faster. No grain required. Versatile Use: Perfect for cutting carbide such as stainless steel, tin and cast iron as well as plastic, aluminum alloy, wood and other softer metals. ✔ Please pay attention to speed, pressure and heat regulation when drilling. 【90 Day Warranty】At Amoolo, we focus on customer satisfaction. Get your drill today along with our 90-day hassle-free warranty policy, replacement or refund guaranteed for any product defects!