Mandrels: 1 set each of M3, M4, M5, M6, M8, M10, M12, 1/4-20, 5/16-18, 3/8-16, 1/2-13, 8-32, 10-24. The extended handle provides optimal torque for setting fasteners efficiently, while the quick de-riveting knob allows you to release mandrels instantly by twisting, streamlining both installation and removal tasks.