HEAT TREATED CHROME NICKEL ALLOY STEEL MATERIAL; 7 PIECE(S); (7) METRIC SET SET CONTENT; HEX DRIVE STYLE; (1.5, 2, 2.5, 3, 4, 5, 6) MM KEY SIZES; KEY LENGTH 2 TO 2-1/2 INCH; HANDLE LENGTH 3-11/16 INCH