M35 Cobalt Drill Bit Set 20PCS(1/16"-1/2") High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal with Index Storage Case

M35 Cobalt Drill Bit Set 20PCS(1/16"-1/2") High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal with Index Storage Case

【5% COBALT TWIST DRILL BITS SET】Made from M35 Cobalt Steel with Molybdenum and Cobalt added to form a hardened alloy, can measure up to 67 Rockwell hardness, cut faster, last longer, and last longer than normal HSS drill bits 12 times. 【SIZE】1/16x2, 5/64x2, 3/32x2, 7/64x2, 1/8x2, 9/64, 5/32, 11/64, 3/16x2, 7/32, 1/4, 5/16, 3/8, 1/2 inch bits; Comes in plastic storage case for easy storage 【TWIST DESIGN AND PERFORMANCE】Precise 135° SPLIT Point, Ti Surface and 3-Flat Shank. Prevents walking and removes chips and particles faster. Precision fully ground to ensure smooth chip movement. 【PROFESSIONAL AND WIDELY USED】M35 Cobalt High Speed Steel is more suitable for hardening materials. Ideal for cutting stainless steel, steel and cast iron as well as wood, aluminum alloys and other metals. Not suitable for glass or ceramic materials. Pay attention to speed, pressure and heat control when drilling. 【SERVICE】If you have any problem with our metric drill bit set or are not satisfied with the product, please feel free to contact WildBossy. This Jobber Length Twist Drill Bits Set is designed for efficient and precise drilling in a wide range of hard and common materials, making it an essential tool for metalworking, DIY home repairs, automotive maintenance, construction, and equipment repair. Suitable for stainless steel, cast iron, hardened steel, metal, wood, and plastic, these drill bits deliver clean, accurate holes when used with power drills or drill presses. The jobber length design provides an ideal balance of strength and reach, reducing vibration and improving drilling stability, while the twist flute structure ensures smooth chip removal and helps minimize heat buildup during operation. Compatible with standard drill chucks, the set works seamlessly with handheld drills and drill presses, especially when used with a drill press vise for added control. For optimal performance and extended tool life, the use of cutting fluid or cutting oil is recommended, and a center punch can help improve drilling accuracy. Packed in a durable, organized storage case for easy identification and portability, this versatile drill bit set is well suited for DIY enthusiasts, handymen, mechanics, metal workers, and professionals working in workshops, garages, industrial sites, or home improvement projects, delivering reliable performance for everyday drilling tasks.