All pre-rinse faucets are pre-assembled st the factory to substantially cut installation time. This, coupled with the new Quick Connect Hose Assembly makes Krowne pre-rinse units some of the easiest to install. Krowne offers optional add-on faucets that allows user to use their Pre-Rinse as a regular faucet with shut-off valve located in front. There are also Low Lead versions available for use required states.