Two-set pack includes chrome-vanadium alloy SAE and metric hex key sets boasting conventional and hex ball ends that provide 360 rotation at up to a 20 angle, which permits off-angle turning of bolts. SAE set includes 0.05", 1/16", 5/64", 3/32", 3/16", 7/32", 1/4", 5/16" and 3/8" ends. Metric set includes 1.5mm, 2mm, 2.5mm, 4mm, 5mm, 6mm and 10mm ends. Tools meet or exceed ANSI specifications for hardness and torque. Lifetime warranty.