The Switch (1p Screw Type) W/Lock with OEM no. 320195 is a genuine HiKoki Hitachi part for the following models:
Hitachi/HiKoki D13VF 13mm heavy-duty electric drill
Hitachi/HiKoki D13VG 13mm variable-speed drill
Hitachi/HiKoki D10VF / D10VG 10mm Electric Drill