【Very practical】8 aerators, 2 wrenches. Suitable for installing internal thread faucets, such as kitchen sink faucets, washbasin faucets, bathroom faucets, etc. [Environmental protection] Inside the honeycomb aerator, the water flow becomes smoother and does not splash. Reduce the noise of the faucet and save up to 30% on water consumption. 【Made of high-quality ABS plastic】 No corrosion, no clogging, no rust and no odor. [Simple installation] The wrench The corresponding ventilation hole can be tightened directly, even amateurs can install it easily. Support recommendations: It is recommended to replace the boiler every 3 months to avoid bacteria and sediment. Ensuring water quality and flow rate not only saves water, but is also healthier.