Features and Benefits:SuperKrome® finish provides long life and maximum corrosion resistanceSureGrip® hex design drives the side of the fastener, not the cornerProvides access where deep sockets are too big but standard length sockets won't get the job doneMade in the U.S.A.Lifetime warranty12 piece set is made in the U.S.A., and features SK's high polish SuperKrome® finish, which provides for long life and maximum corrosion resistance. For improved fastener contact, SK's semi deep sockets incorporate a deeper broach depth than standard length sockets and utilize a fully tapered, nose down design for improved access over straight wall designs. All sockets feature SK's SureGrip® hex design, which drives the side of the fastener, not the corner, to avoid edge breakage which can occur on rusted or damaged fasteners when a traditional straight cornered hex tool is used. Sizes include: 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm and 15mm.