Brass construction. Satin Nickel Finish match PlumbUSA's other plumbing parts. With sprayer. Operated by washerless ball-type cartridges (Which is Delta or Peerless interchangeable). Last longer and less expensive to maintain than ceramic-cartridge faucets. 1/2"-male threaded inlet. This is a high-scale faucet at discount price. Please check more of our products at www.faucet888.amazonwebstore.com