SK Professional Tools 316 16mm 3/8 in. Drive 12-Point, Metric Standard Chrome Socket. Cold forged with high alloy US steel for maximum strength. SureGrip drive design drives the side of the fastener, not the corner, to provide increased strength and avoid rounding of rusted or damaged fasteners. SuperKrome Plating delivers toughest finish with high polish plating which results in toughest jewelry finish, providing long life and maximum corrosion resistance. This SuperKrome finish Steel Socket is proudly made in USA.