Grip-Tite Super Sockets- 17 Pc Metric Set, 3/8 Inch Drive Removes rounded nuts and bolts Holds the fastener straight for easy installation (not magnetic) Garaunteed never to round a nut or bolt Includes molded case, quick release ratchet-3/8 drive, 3 extension, 7 standard length sockets (10mm, 12mm, 13mm, 14mm, 15mm, 17mm, 18mm), and 8 deep sockets (10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm) Lifetime no nassle warranty