25PC Drill Bit Set, HSS Wear Resistant Quick Chip Removal Drill Bit Set with Storage Case, Cobalt Twist Drill Bits Set Kit for Hard Metal, Hardened Stainless Steel and Cast Iron - PerGar, PerGarf745ey3t0s

• Cobalt High-Speed Steel: Crafted from premium cobalt steel, these twist drill bits offer excellent heat resistance and toughness, allowing them to effortlessly cut through metal like butter. High Temperature Quenching: Through a high-temperature quenching process, these drill bits achieve high wear resistance and hardness, ensuring durability and long-lasting performance. Double Back Angle Blade Opening: The double back angle design enhances the sharpness and speed of the drill bits, improving chip evacuation and drilling speed. 24H Salt Spray Test: Tested for 24 hours in a salt spray environment, these drill bits exhibit excellent resistance to rust, maintaining their durability and superior performance over time. High Concentricity Straight Shank: Featuring a high concentricity straight shank, these drill bits ensure a secure fit and prevent any looseness, even during heavy-duty applications or accidental impacts.