Milwaukee QUIK-LOK™ 3" x 1/4" Bit Extension is designed for use with all 1/4-inch hex shank bits, providing a versatile and durable solution for your drilling and fastening needs. This bit extension allows for quick and easy bit changes without the need for a hex key or any additional tools, making your work more efficient. Built with a hardened shank, it ensures maximum durability and long-lasting performance, even under demanding conditions. Whether you're a professional tradesperson or a DIY enthusiast, this bit extension enhances your tool's functionality and convenience. Model Number: 48-28-1000