The Milwaukee 4932479854 SHOCKWAVE Impact Duty Screwdriver Bit Set is a comprehensive 40-piece solution designed for heavy-duty impact applications, offering versatility for both fastening and light drilling needs. Featuring Shockzone™ Geometry, these bits are engineered to flex, reducing stress at the tip and minimizing breakages. The custom-engineered steel formula enhances resistance to shock, while the compression-forged tip ensures optimal fitment with screw heads, preventing cam-out and stripping for an extended lifetime. This set includes 29 SHOCKWAVE™ screwdriver bits, 7 SHOCKWAVE™ Impact Duty™ magnetic nut drivers, 2 SHOCKWAVE™ Impact Duty™ magnetic bit holders (76 mm and 152 mm), and 2 SHOCKWAVE™ Impact Duty™ 1/4" Hex drill bits (3 mm and 4 mm).