Hyjoy 21-Piece M35 Cobalt Drill Bits for Hardened Metal, 3-flute shank design minimizes breakage, 135° point for starts in steel, cast iron, wood

【M35 Cobalt Material】Made from industrial-grade M35 cobalt -speed steel (5% Cobalt), these drill bits are engineered to exceed standard bit . They maintain their much longer, resisting generated when materials. This results in reduced breakage, smoother process, and cost savings over time for your workshop. 【Chip Removal】The multi-flute design is optimized for efficient debris removal. It effectively directs chips away from the hole, minimizing accumulation and bit wear. This leads to cleaner, more holes with roundness and smoother wall , reducing the for post-processing. 【Maximum Grip, No Slippage】Bid farewell to hazardous bit slippage! The non-circular shank guarantees completely , non-rotating hold in your drill chuck. This optimizes transmission and offers enhanced control, enabling you to handle demanding tasks hardened metals with assurance and . Self-Centering Feature: Hits the right target, every time. The 135° split point tip is self-centering and greatly reduces "bit walking" curved or hard surfaces. This allows you to faster and with exact accuracy, without the requirement for center , making your projects faster and more efficient. 【Versatile for Common Materials】This 21-piece kit is your ultimate for of materials. It easily handles hardened steel, standard steel, and cast iron, while also outcomes in aluminum, wood, and plastic. It' the sole drill bit set you'll require for nearly any task, from metal fabrication to household fixes.