To provide a non-returnable razor cartridge provided with a spring means which can return an one-way turnable cartridge to the rest position of the cartridge.

In the adapter which is used for fixing a one-way turnable cartridge to a non-returnable razor, the adapter 10 is united with a handle or detachable. A spring tongue means 23 or spring arms 15, 16 deflect the cartridge in the rest position thereof to obtain return moment when the cartridge turns in use.