Not all faucets have traditional faucet threads, in which case the use of faucet adapters is recommended to adapt housings to various thread sizes. This NEOPERL faucet adapter has female 55/64 in. - 27 in. threads on the top and a male 3/4 in. hose connection on the bottom. If you have a standard size male 55/64 in. - 27 in. thread faucet and you want to connect a portable dish or clothes washer this is the adapter you need. Once connected you can attach a 3/4 in. hose. High quality, lead free material is used and the finish is first class chrome plating.