"Non-slip open end works in both directions without reversing the wrench","Forged from higher carbon steel; same heat treating process used in manufacturing jet landing gear","Anvil drive box end can be used to loosen or tighten many 6 point, 12 point, spline, TORX, square and fasteners rounded up to 50% 30MM LONG COMBINATION WRENCH MCL30M2K | Matco Tools