Pxyelec 13-Piece Tungsten Steel Cemented Carbide Twist Drill Bit Set (3-15mm), YG Alloy Blade for Metal, Wood, Steel, Brick, Concrete,Glass – Professional Multi-Purpose Shockproof Hardened Drill Bits

• * Professional Carbide Construction：Crafted with high-performance YG Cemented Carbide + Chrome Vanadium Steel,the bits offer superior hardness and exceptional wear resistance compared to high-speed steel. Expertly designed for metal drilling, they effortlessly penetrate stainless steel, alloy steel, cast iron, copper, aluminum, and more, making them the reliable choice for professional repairs and serious DIY projects
• *Engineered with the highest quality tungsten carbide, these drill bits offer high toughness, abrasion resistance, high-speed cutting performance, making them ideal for professionals and DIY enthusiasts alike
• Water Cooling Guidance：As soon as the heat starts to build up on the tip, the drill bit can lose the hardness that make it a cutting tool. Using HSS drills at low rpm with cooling fluid or lubricant can provide a large quantity of successful holes in metal. TThere have chunks of carbide on the end, and carbide will make easy work of even the hardest steel, and allow you to use high rpms. (In the process of opening holes to continue to add water for cooling.)
• * Versatile for Various Materials：While optimized for metal, its robust performance also handles wood, plastic, and more. Whether for construction, woodworking, mechanical repair, or household renovation, this versatile set delivers outstanding results, serving as a powerful assistant for both professional mechanics and DIY enthusiasts
• * Package include: 13pcs carbide drill bit set. Size: 3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm 13.5mm 14mm 15mm

* Material: YG Cemented Carbide + Chrome Vanadium Steel * Drills clean, accurate holes in these thin materials: sheet metal, ducts, steel, copper, brass, aluminum, plastic, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron. * Ideal for drilling in tough metal, including heavy-duty abrasive alloy and hardened steel. * In the process of opening holes to continue to add water for cooling. * Size: 3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm 13.5mm 14mm 15mm. * Twist drill bits for fine-detail drilling with the cutting power of diamond * Package include: * 13pcs Tungsten Steel Cemented Carbide Twist Drill Bit