Upgrade your toolkit with this versatile 20-piece Impact Allen wrench drill bit set. Featuring both Metric and SAE sizes, these 4-inch long bits are crafted from durable S2 steel for superior strength and longevity. The 1/4-inch hex shank design ensures universal compatibility with standard drill chucks and impact drivers. Each bit is precision CNC machined for accurate fit and features magnetic tips to securely hold fasteners in place while working. The set comes organized in a sturdy storage box to keep your bits protected and easily accessible. Whether you're a professional tradesperson or serious DIY enthusiast, these hex bits are ideal for accessing hard-to-reach fasteners and providing the torque needed for demanding applications. The extended 4-inch length offers improved reach for deep or recessed areas while maintaining stability during use.