SK Hand Tools 28-Piece 1/2-Inch Drive 6 Point Standard And Deep Fractional Impact Socket Set features the SK's High Visibility technology. These sockets are laser engraved every 120 degrees with extra-large markings for quick-and-easy reference. Additionally, they are covered with a rust-preventative compound, which makes them exceptionally resistant to corrosion. The SK'S SureGrip hex design drives the side of the hex, rather than the corner, for increased strength and to prevent the rounding of rusted or damaged fasteners. As an added bonus, extra recess depth allows use where threaded fasteners protrude above the nut or where the fastener is domed. The unique nose-down design provides improved access over typical straight-wall designs. This product is backed by a lifetime warranty and comes in a molded plastic case.