▲ QUALITY SUPERIOR - Quality M2 cobalt high speed steel construction industrial with capacity and durability Proven for drilling holes in wood, plastic, aluminum, copper, cast iron, mild steel, stainless steel, sheet metal and more. ▲ Fast and efficient – The design divided into 135° à the tip increases cutting and drilling speed thanks to self-centering and prevents the bit from walking or shaking; Twisted blade with deep grooves removes chips and particles faster than other drill bits. ▲ Advanced Coating – The best dual-layer gold-titanium and black nitride coating holds lubricants more firmly, making the drilling process smoother, and is 80% more durable and wear-resistant. corrosion than ordinary black enamel coatings. Resists intensive applications. . ▲ Compatibility and secure fit – The 1/2 inch reduced shank is compatible with all standard drills. column and most power tools on the market, and the end unique triple flat shank locks more securely onto the 3-inch chuck.