Milwaukee 1/4" Drive 5.5-mm 6-Point Socket w/ FOUR FLAT™ Sides is designed for versatility and durability. Featuring the innovative FOUR FLAT™ Sides, this socket prevents rolling and is wrench-ready for added convenience. Its optimized geometry helps reduce bolt rounding and stripping, ensuring a secure fit every time. For easy and quick identification, the socket size is clearly stamped into the flat surface, making it simple to find the right tool when you need it most. Model Number: 45-34-9031