Made in the U.S.A., featuring the SureGrip® hex design, which drives the side of the hex, not the corner. Coated with a rust-preventative compound that makes them exceptionally resistant to corrosive factors. Laser engraved with 3 extra large markings every 120 degrees around the sockets for improved readability.SureGrip® Drive Design drives the side of the fastener, not the corner, to provide increased strength and avoid rounding of rusted or damaged fasteners.Corrosive resistant1/4" Drive - 2", 3" 6" Extensions; 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm Swivel Impact Sockets; 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm Standard Impact Sockets. Packaged in a molded plastic case.