A crowfoot wrench is a specialized tool designed for accessing and tightening or loosening fasteners in tight or hard-to-reach spaces where conventional wrenches cannot fit. Shaped like an open-ended wrench head without a handle, it attaches to a ratchet or torque wrench via a square drive, providing versatility in various angles and applications. Crowfoot wrenches are available in both metric and SAE sizes, with some sets offering flare nut versions for use on soft fittings like hydraulic or fuel lines. Their compact and lightweight design makes them ideal for automotive repairs, plumbing, HVAC work, and other mechanical tasks where space constraints are common. The open-end design ensures secure gripping of fasteners, while the ratchet or extension bar allows for controlled torque application. Durable and precise, crowfoot wrenches are essential for professionals and DIYers needing efficient tools for challenging, confined spaces.