This Milwaukee SHOCKWAVE IMPACT DUTY bit set comes with 31 pieces, designed for use with impact drivers. It features a custom-engineered steel for increased resistance to shock and a SHOCK ZONE geometry that flexes to reduce stress at the tip, minimizing tip breakages. The laser-hardened WEAR GUARD TIP enhances wear resistance and protects the fit over the bit's lifespan. The precision-milled tip ensures a better fit with screw heads, reducing cam out and stripping for an extended lifetime.