About this product

PREMIUM QUALITY - Industrial grade cobalt high speed steel construction for proven capability and durability to drill holes in wood, plastic, aluminum, copper, cast iron, mild steel, stainless steel, sheet metal and more

FAST AND EFFICIENT - The 135° split point design at tip increases cutting and drilling speed through self-centering and prevents drills from walking or wobbling; The twisted blade with deep groove design clears out chips and particles faster than other drill bits

SUPERIOR COATING - Best gold titanium and black nitride dual coating finish holds up lubricant more firmly for a smoother drilling process, and is also 80% more durable and corrosion resistant than regular black enamel finish to withstand heavy duty applications

COMPATIBILITY AND FIT SECURELY - The 1/2 Inch reduced shank is compatible with all drill presses and most power tools in the market, and the unique Tri-flatted shank end locks onto a 3-jaw chuck more tightly and securely to eliminate slippage during operation

NO SKIPPED LARGE SIZES - Set includes a full range of 8 pieces large-diameter silver and deming drill bits in a heavy duty aluminum storage case for easy carrying and organizing.