https://rh.com/de/en/catalog/product/product.jsp/prod25210393?swatch=850004&layout=0&ct=true 

Lacquered Blued Brass and Polished Brass trims are solid brass; all other trims are solid stainless steel.
Hand finishing
Wipe with a soft, damp cloth to remove excess moisture; avoid using harsh chemicals or abrasive cleaners.

Soap dish: 8 cm W x 25 mm D x 14 cm H
Tray: 15 cm W x 25 mm D x 28 cm H
High capacity: 9cm dia., 17cm H
Short tank: 9 cm diameter, 12 cm H
Napkin Cover: 14cm W x 14cm D x 14cm H
Soap dispenser: 6 cm dia., 20 cm H
Glass: 6 cm diameter, 12 cm H