Ergonomic T-handles and extra long stems provide tremendous torque for turning socket head screws. The long ends have ball tips for reaching tight spots and the short ends have straight hex profiles. Made from hardened chrome vanadium steel for long life. Metric sizes include: 2, 2.5, 3, 4, 5, 6, 7, 8 and 10mm. SAE sizes include: 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 1/4", 5/16" and 3/8". Each set includes a fitted case.