"Made of high-strength chrome vanadium steel, providing superior torque for more turning power. 12 tooth spline socket, suitable for various fasteners such as 6 points, 12 points, E-Torx, triangle, square, etc. Ideal for high torque applications such as removing tamper-resistant wheel nuts, cylinder head bolts, and other engine bolts. Comes with a solid and sturdy case with 2 metal locks. Sizes are also stamped next to each slot for identification."
