Ring spanner sizes 1/8" x 3/16", 1/4" x 3/16", 1/4" x 5/16", 5/16" x 3/8", 3/8" x 7/16", 7/16" x 1/2". Open end spanner sizes 1/8" x 3/16", 3/16" x 1/4", 1/4" x 5/16", 5/16" x 3/8", 3/8" x 7/16, 7/16" x 1/2".
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