Use for removing or installing fasteners around the home, garage, or workshop. Drop forged, heat treated, chrome vanadium steel. Black oxide finish resists rust and corrosion. Sizes – SAE (5/64”, 3/32”, 7/64”, 1/8”, 9/64”, 5/32”, 3/16”, 7/32”, 1/4”), MM (1.5, 2, 2.5, 3, 4, 5, 6, 8mm), Star (T9, T10, T15, T20, T25, T27, T30, T40).