20 Piece Sae & Metric Combination Wrench Set

20 piece sae and metric set is made of drop forged steel for strength and durability, is fully polished to help resist rust and heat treated for uniform hardness. Set contains 10 SAE wrenches size 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 and 7/8 inches. Metric sizes are 6, 7, 8, 9, 10, 12, 13, 14, 15 and 18mm. All wrenches have open and box ends.