If you are looking to install a new shower with a concealed shower valve, this connector is an essential component, to ensure it is plumbed correctly.As with all our plumbing accessories, this 1/2 inch connector is highly durable, made from solid brass and has a 15mm nut end.If you are fitting a twin shower valve, you will require 2 of these, along with 2 x 3/4 inch connectors. If you are fitting a triple valve, you will require 3 of these and 2 x 3/4 inch connectors.We would always recommend hiring an experienced plumber to install your new shower.