Cylinder Breaker’s Head
It is the head part of the super light Cylinder Breaker set (KIR-35L). This head uses a 6L hex key.
The apparatus is made of hardened steel and its mouth is designed as a key cylinder. Thus, it wraps around the cylinder of the door lock and grips the cylinder very tightly when the screw on the side is tightened. Thanks to the specially designed sharp channels on the inner walls of the part holding the cylinder, it has been made suitable for applying force without stripping the cylinder.