... 3. Meet and exceed ANSI standard 1. made of heat-treated Chrome Vanadium steeel for strength exceeding international specifications2. plated with ... HolderSize:MM= 6MM, 8MM, 9MM, 10MM, 11MM, 13MM, 14MM, 16MM, 18MM, 19MM, 22MMSAE= 1/4", 5/16", 3/8", 7/16 ...