Rhaa is a collection based on contrasting basic geometric shapes, generating singular and dynamic pieces that take design elements and combines them with postmodern forms, generating a contrast between a cylindrical surface with tangential faces and an open angle with two diagonals. Picking up a lineage of geometric arbitrariness, the pieces indicate the direction in which the lever must be actuated for the water to flow. All the pieces in the collection have a cold start function and are made of between chrome and nickel, saving considerable energy consumption and protect them from oxidation.