Our Metric Double End Flare Nut Wrenches offer easy identification with ink-filled size labels for quick distinction between SAE and metric wrenches. Our slim profile open ends provide better access to hard-to-reach line nuts and hex bolt heads. The Comfortable I-Beam Handle Design allows superior user comfort, even while applying high torque. Standing behind our products, Milwaukee offers a Lifetime Guarantee on all of our Mechanics Hand Tools.