Craftsman 9 pc. Standard and Metric Flare Nut Wrench Set One-piece steel alloy construction for rugged performance Includes: 3/8 x 7/16, 1/2 x 9/16, 5/8 x 11/16, 3/4 x 7/8 in. and 9 x 11, 10 x 12, 13 x 14, 15 x 17, 19 x 21mm Use when removing or replacing nuts on fuel or brake lines Backed by the Craftsman Forever Warranty Designed to prevent rounding out edges over time