SK Hand Tool 94547 Deep Socket Set &ndash; 47 piece Metric Tools, Durable, Corrosion Resistant. Standard Fractional Impact Sockets Heavy Duty Impact Units: durable metric utilities with maximum corrosion resistance. SuperKrome finish ensures long life. Power tools can work in harsh working environments SureGrip Hex Design Sockets: fractional units carry diamond knurled grip for sure handling. High strength hand tools feature SureGrip hex design to drive the side of the fastener, not the corner. Sockets construction avoids edge breakage Socket Set Assembly: 47 pieces of standard and deep sockets. Socket case includes 7-1/2-inch pro-ratchet, 2 extensions, 25 standard sockets, and 19 deep sockets and blow molded case Standard Deep Socket Set Measurements: tool kit is assembled with 7-1/2-inch pro ratchet having 3 and 6 inch extensions carrying 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, and 7/8 inch standard sockets. Socket case has deep sockets of 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 , and 7/8 inch size. Standard sockets measure 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 and 19 mm. Deep sockets possess a size of 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 and 19 mm Portable Tool Kit: sockets come with a molded plastic tray for easy grip measuring 9.6 x 13.5 x 2.2 inches. Impact unit case is easy to carry. The compact sized standard deep socket set weighs 8.5 pounds