Spyder Stinger Mach-Blue armor plated high speed steel (HSS) drill bits are high performance metal and wood drilling bits that provide exceptional quality and durability, drilling performance, and value. The Mach-Blue Armor Plating combined with the advanced M-series alloy tool steel construction and proprietary heat treatment make these bits truly revolutionary — they retain sharper cutting edges for longer, have reduced heat build-up and cutting friction, and increased durability, rigidity, and breakage resistance. These incredibly durable bits are the Pro's choice for precision drilling, extended bit life, and value.

• Up to 100x more holes and 8x faster than titanium or black oxide coated drill bits
• Super-hard Mach-Blue Armor Plating retains sharper cutting edges, and reduces heat build-up and cutting friction
• Durable drill bit for long drill life, precision holes, and increased speed and productivity in tough-to-drill applications
• Impact-rated 1/4-in speed hex won't slip in conventional 3-jaw chucks and is ideal for use in quick change impacting power tools
• Ideal for drilling stainless steel, mild steel, aluminum, wood, stacked materials and other difficult to drill alloys