Milwaukee 1/2" Drive 15-mm Deep Socket w/FOUR FLAT™ Sides is designed for versatility, making it an essential addition to any toolbox. This socket features four parallel flat sides that help prevent rolling and provide wrench-ready capabilities for added convenience. The size is clearly stamped on the socket, allowing for quick and easy identification. Its optimized geometry is engineered to reduce bolt rounding and stripping, ensuring a secure fit and reliable performance every time. Model Number: 45-34-9139