Torx socket sets are used for external Torx Bolts, Torx socket set sizes for all automobile applications include sizes E-6 through E-20, This is 1 of the 10 sizes, 1/4"" Drive External Torx Socket E-6, Made of heat-treated alloy steel, Dimensions: 4, 2"" x 1, 8"" x 0, 5"", SKU: WTD3462