Used with the filter in the faucet, replace the damaged or worn filter , install well and no leaks. Made of high hardness brass, strong enough, not easy to rust or corrode, longer service life, reduce replacement times. Faucet nut for RP51503. Includes brass nut and gasket, excellent replacement kit. Easy to install, size fits the part, works well, short replacement time., Weight: 0.17857443222 Pounds, Manufacturer: ximie