Milwaukee SHOCKWAVE™ Impact Duty™ 18" Locking Bit Holder is engineered to be the strongest and most durable locking bit holder available. Its innovative auto-locking design fits all inserts and 1/4-inch hex bits, ensuring a secure and reliable connection. The small-profile release collar allows for quick and easy one-handed bit changes, enhancing user efficiency. Equipped with dual magnets, this bit holder maximizes holding power to the fastener, preventing drops during use. The bits are specially optimized with Shockzones technology to absorb three times more torque, which helps prevent breakage and delivers thirty times longer life d to standard bits. This makes it an essential tool for professionals seeking durability and performance in demanding applications. Model Number: 48-32-4534