A tool kit for holding a door knob during supporting installation or uninstallation of a door locks, the tool kit comprises a bar clamp comprising a clamp assembly mounted on a slide bar, adapted for holding an edge of a door. The slide bar extends towards an outer face of the door. The tool kit further comprises an angular bracket comprising a first arm slidably mountable on the slide bar and a second arm comprising a felt pad adapted for holding a door knob in position on the outer face of the door, upon pressing at least one locking pressure point on the angular bracket.