The bits mark the debut of Spyder’s proprietary Mach-Blue™ armor plating, an ultra-hard surface plating that helps retain sharp cutting edges and reduce heat build-up, resulting in faster cuts and exceptionally long life. Beneath the plating, the standard-sized bits are constructed of heat-treated M-Series tool steel, known for its durability and resistance to breakage. They are optimized for use in wood, steel, mild steel, aluminum, stacked materials and other tough-to-drill alloys.
STINGER™ Mach-Blue™ HSS bits have been shown to drill up to 100 times more holes than titanium or black oxide drill bits before a replacement is required, and to make holes up to eight times faster than titanium drill bits. Other features include a self-centering split point design that won’t walk or wander, even on pre-hardened or curved surfaces. The impact-rated ¼” speed hex shank allows the bit to be used in quick-change impacting drivers as well as conventional three-jaw chucks in hand drills and drill presses.