- High-Quality M35 Cobalt Material: Crafted from durable M35 cobalt, these drill bits offer exceptional strength and longevity. They are resistant to rust, ensuring reliable performance over time. - 5-Flute and 82° Tip Design: Each countersink features a five-blade design combined with a precise 82° tip. This design minimizes vibration during use, enhancing stability and extending the lifespan of the drill bit. - Five Commonly Used Sizes: This set includes the most popular sizes: 1/4", 3/8", 1/2", and 5/8". Each bit is conveniently stored in a plastic box for easy organization and transport. - Versatile Applications: Ideal for precision drilling on a variety of materials, this hexagonal shank countersunk drill bit set is compatible with medium-hard stainless steel, plywood, metal, softwood, hardwood, fiberglass, mild steel, copper, aluminum, and more. Use Scenarios: 1. Perfect for DIY enthusiasts and professionals alike, these drill bits excel in woodworking projects, allowing for clean and accurate holes in hardwood and softwood. 2. Essential for metalworking tasks, the M35 cobalt drill bits effectively drill through stainless steel and aluminum, providing durability and precision in fabrication work. 3. Suitable for home improvement projects, these bits can efficiently handle drilling in fiberglass materials, making them a versatile addition to any toolkit.