WRIGHT 1/2 x 9/16 FLARE NUT WRENCHWRIGHT 1/2 x 9/16 FLARE NUT WRENCH 1618, DOUBLE END, 6-POINT Double End Flare Nut Wrench Heads are offset at a 15-Degree Angle, 7-1/2" Overall Length, 31/32" Head Diameter-1/2," 3/8" Head Thickness-1/2," 11/32" Slot Opening-1/2," 1-1/16" Head Diameter-9/16," 7/16" Head Thickness-9/16," 13/32" Slot Opening-9/16." Meets or exceeds ASME B107.100. This wrench is also called a tube wrench, line wrench and crow's foot spanner wrench. It is for gripping the nuts on the ends of tubes. It is similiar to a box end wrench. But, instead of encircling the nut completely, it has a narrow opening just wide enough to allow the wrench to fit over the tube, and thick jaws to increase the contact area with the nut. This allows for maximum contact on plumbing nuts, which are typically softer metals and therefore more prone to damage from open-end type wrenches.
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