Easy to install: 1/2inch connection (1/4inch adapter for fresh water supply included). 60 cm standard stainless steel water inlet hose. Installation opening 3540 mm. construction: 3 in 1 extendable kitchen sink faucet. Made of brass, solid brass construction ensures durability, protects your health and ensures corrosion resistance. Flexible 3way faucet with filter: extends 3040 cm and automatically retracts the nozzle after each use. Provides flushing coverage for the entire sink and features two water output modes. Press the switch to change the water flow or flush mode to avoid splashing. Drinking water faucet with dual outlets: one outlet connects to a reverse osmosis system or drinking water filtration system, the other to hot and cold water. Water flows through the corresponding pipe or outlet, and remains clean for use without concern. Practical use scenarios: Connect an RO or drinking water filtration system to the dedicated outlet and use the hot/cold outlet for everyday kitchen tasks. Extend the spray to reach all corners of the sink for washing produce or rinsing dishes, then switch to flush mode to minimize splashing. Fill pots quickly using the extended spray while simultaneously supplying hot or cold water from the other outlet for cooking or beverage preparation. Compatibility and performance: designed for 1/2inch plumbing connections with a 60 cm inlet hose and a 3540 mm installation opening, providing reliable operation and convenient daily use.