This Mac Tools Double End Flare Nut Wrench is a must-have for any mechanic. Made in the United States, this specialty wrench is perfect for working on Metric systems of measurement. The 9mm x 11mm size is ideal for a variety of automotive tasks. part number is FB6911MMR. Condition is new. Designed for soft metal flare nut. 270° Wraparound on box end allows torque to be transmitted on five sides to prevent fastener distortion. Crowned handle edges for more comfortable grip.