4" lavatory centerset faucet, brass construction (bottom of the spout is plastic plate), durable washerless cartridges, oil rubbed bronze finish, with a pop-up drain assembly as free gift. Operated by washerless cartridges (Which is Delta or Peerless interchangeable). Last longer and less expensive to maintain than ceramic-disc-cartridge faucets. 1/2"-male threaded inlet. This is a high-scale faucet at discount price.