I purchased this product based on the product description of "Solid brass construction". However, when the product arrived the faucet trim and shower head trim are obviously not solid brass. I contacted customer service (VERY PLEASANT people to work with) who took the time to find an answer for me on the construction. She was told it is a metal composite. I called DELTA to see what they had to say and they confirmed those parts are, in fact, plastic but have a metal type finish (not solid brass). I asked DELTA if ANY of their faucets were solid brass and he said ALL their faucets are made of this plastic/metal type finish construction. I WILL say it does look nice and comes with a lifetime guarantee to the original purchaser, so it's not like I have a lot of risk. I also found Wayfair's price to be much more appropriate to the product. I've seen other's carry the same product for around $220. I would not pay that for this.

Looks good. 
Made of plasitc/Metal type finish on trim