The MILWAUKEE® 19mm X 21mm Double End Flare Nut Wrench offers easy identification with ink-filled size labels for quick distinction between SAE and metric wrenches. The 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. Milwaukee stands behind its products and offers a Lifetime Guarantee on all Mechanics Hand Tools.