Works with 2 cylinders, each of which can open the lock. Example: in a residence, all the tenants can open the door with their key and the EDF agent can enter with his pass to read the meters. Stainless steel faceplate. Cylinders not supplied. 32/65mm spindle. Centre distance 72mm. Square 9mm. 1/2 turn return with key Serrure à double cylindres WSS