Chrome vanadium steel wrenches are heat treated and black-oxide finished * Precisely-sized, chamfered ends insert smoothly into fastener head, reducing wear * Contoured shape, with rounded profile and soft, textured grips, comfortably fits in your pocket and your palm * Color-coded housing for instant identification and high visibility size markings for fast wrench selection * 8-pc. Hex key wrenches (Metric): 1.5, 2, 2.5, 3, 4, 5, 6, 8 mm