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This 9-pc standard and metric flare nut wrench set features four of the most common standard sizes, and five common metric sizes, for a range that suits both the auto and repair shop. Crafted from rugged alloyed steel, and backed by Craftsman's Forever Guarantee, this set delivers a lifetime of solid performance. Add it to your toolbox and get the strength that gets the job done. Craftsman 9 pc standard and metric flare nut wrench set, 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