Grohe 40312EN0 is part of the Atrio Faucet Collection. Atrio is styled in the understated Bauhaus movement, with simple yet stylish design elements adding balance to your bathroom. The Grohe 40312EN0 Robe Hook. Designed to coordinate with other Grohe bathroom accessories, and to help your smaller areas remain clutter free and organized. This Robe Hook comes in a brushed nickel finish for an appearance set apart is part of the traditional Chrome, and that coordinates with the rest of your Grohe designed Bathroom.