Cold water RV faucet: Hand pump is ideal for RV's and campers with a holding tank that require a pump faucet Easy to Use: Rotate the handle back and forther to pump water through the faucet Functional Prime Lock: Keep the water in prime holding position for immediate water release, or leave the line in drain position to return water to the holding tank Easy to install: Simply drill a hole through the coutnerotp, place pump and connect hose to water tank