Snap-On Tools RXM1314S 13/14mm flare (custom curved 14mm end for hard to reach jobs)and RXM911S 9/11mm Double End Flare Nut Line Wrenches are customized high-quality hand tools designed for automotive use. Made by the reputable brand Snap-on in U.S.A these 6-point drive type wrenches feature a metric system of measurement with sizes of 13mm x 14mm and 9mm x 11mm.