Features and Benefits:13 steps with laser engraving for clear stop on size identificationA dual spiral flute combined with the Rapid Strike Tipâ„¢ delivers up to 2x faster holes than competitive Impact Step BitsMade in the USA with global materialsOptimized for Impact Drivers, Drill/Driver CompatibleThe optimized SHOCKZONEâ„¢ reduces early shank breaksThe Rapid Strike Tipâ„¢ provides fast and accurate startsTitanium Aluminum Nitride (TiAlN) coating delivers 5x Longer Life than competitive Impact Step BitsMilwaukees SHOCKWAVEâ„¢ Impact Dutyâ„¢ step bits are engineered to deliver the most durable and fastest holes in the market. Made in the USA with global materials, these step bits have best-in-class performance in impact drivers and the versatility to be used in drills. The 1/4 in. hex shank with an optimized Shockzoneâ„¢ provide the industrys most durable shank, reducing early shank breaks. A titanium aluminum nitride (TiBone) coating helps deliver 5x longer life, while the Rapid Strikeâ„¢ tip and dual spiral flute produces 2x faster holes.