Definition
A tube wrench, also known as a flare nut wrench, is used for loosening or tightening nuts on tubing and pipes. It's designed to grip the nut on several sides, reducing the risk of rounding it off. Think of it as a specialized wrench for fragile connections. Unlike an open-end wrench, it encloses most of the nut. It's essential for working with brake lines or fuel lines. It ensures a secure grip without damaging the fitting.