The GreatNeck 6-Piece SAE Combination Wrench Set is constructed from heat treated and tempered alloy steel for strength and uniform hardness and is fully polished and chrome plated for rust resistance and easy cleaning. This set comes in a compact and convenient storage tray. Includes sizes: 1/4-Inch, 5/16-Inch, 3/8-Inch, 7/16-Inch, 1/2-Inch, 9/16-Inch. Covered by GreatNeck limited lifetime warranty. GreatNeck has been a hand tool manufacturer since 1919. Our tool brands strive to bring value in design and function. We stand behind our brands and offer an industry-leading lifetime tool promise on workmanship and materials.