Elegant design: German design and engineering delivers consistent performance for all of your bath needs Built to last: Brass internal components compliment a polymer trim plate for a surface that is resistant to dents, chemical corrosion, and mineral accumulation Compatibilty: This rough-in valve is compatible with AXOR 4-hole roman tub set trims with handshower such as AXOR Starck Organic (Part No. 12424001) Pieces included: This product includes the rough and mounting hardware Installation notes: Hansgrohe recommends a licensed plumber install this product