Milwaukee SHOCKWAVE™ Impact Duty™ 12" Locking Bit Holder features an innovative auto-locking design that securely fits all inserts and 1/4-inch hex bits, ensuring reliable performance during use. This bit holder includes a small-profile release collar, allowing users to quickly and easily change bit tips with just one hand for maximum efficiency. Equipped with dual magnets, it prevents drops by maximizing holding power to the fastener, enhancing overall job site productivity. The bits are specially optimized with Shockzones technology, which absorbs three times more torque to prevent breakage and delivers a lifespan 30 times longer than standard bits. This durable and user-friendly bit holder is an essential tool for professionals seeking high performance and longevity. Model Number: 48-32-4533