The compact site tool allows installation of security door locks into existing door frames without the need to remove the door. The tool is mounted onto the door frame in the required position, and a 46mm sized mortise is created. Depending on the size of the door lock, the process is repeated along the slot until the desired size is achieved.
 
The hardened A2 steel punch is driven by an 18mm hex bolt, can be applied via an impact wrench or any standard spanner.
 
This saves on needless time, effort and additional tools to get an accurate mortise every time.