The blind insert tool HTI 500 has been specifically designed for vertical down applications. It is a hydraulically operated tool for smooth and reliable installation of threaded inserts to provide load bearing threads in thin sheet materials. The pneumatic control and the pneumatic hydraulic pressure intensifier are installed in a separate switchbox. The trigger is integrated in the ergonomic handhold at the equipment barrel. The left hand motion for reversing of the drive screw can be operated separately by an additional switch.