About the size of a car key, this Hook has been designed entirely for hanging door handles, opening locks, pressing doorbells, elevator buttons, switches, bank terminal keys, etc. This non-contact device will allow you to avoid touching unhygienic surfaces. Reusable, it is therefore an economical and ecological alternative. Maintenance Even if the Bacteria - Rays and Viruses only survive one hour on the Hook, Wash it again with water and Soap.