SK Professional Tools 49-piece set includes 3/8 in. Drive 6-Point Sockets including – 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" in standard size sockets, 3/89, 7/16", 1/2", 9/16", 5/8", 11/16", 3/4",13/16", 7/8" deep sockets, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm in metric size standard sockets and 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm in metric size deep Sockets. SureGrip drive design drives the side of the fastener, not the corner, to provide increased strength and avoid rounding of rusted or damaged fasteners. These tools feature SK’S SuperKrome Finish for long-lasting durability and maximum corrosion resistance. This SuperKrome finish Steel Socket is proudly made in USA.