Park Tool MWF-3 Metric Flare WrenchPark Tool is back with another innovative tool that makes performing maintenance on your bike a breeze. The Park Tool MWF-3 Metric Flare Wrench was designed for compression nuts, nipples and other fittings found on hydraulic brake systems. This wrench has a double-sided construction, with a 7mm, five-sided wrench opening on one end and an 8mm on the other. In the middle of the wrench are two 3/8" square wrench slots so you can pair the MWF-3 with a torque wrench. Park Tool designed this wrench with a low-profile and compact design, weighing in at just 44 grams and measuring only four-inches, the Metric Flare Wrench is a must-have for both your at-home or traveling tool kits. FeaturesDouble-sided wrench features 7mm and 8mm wrench openingsSquare 3/8" wrench slot for use with torque wrenchDimensions: 4" x 0. 75" x 0. 15" (101 mm x 19. 5 mm x 4. 5 mm) Weight: 44 g (1. 55 oz)MWF-3 Metric Flare Wrench Instructions | Park Tool | MWF-3 Metric Flare Wrench 7mm and 8mm wrench openings