1.Product packaging information: Package details: 1 swivel hand shower with extension hose (long type). 1 swivel hand shower with ball joint (short type). 2 universal connectors. 2 thread adapters. 2 seals for water stop. Product dimensions: 22 x 170mm (long type) / 22 x 75mm (short type). Product material: ABS + stainless steel. Product color: silver. 2.About cleaning the nozzle. Since the water quality is different in different places, the service life of the sprinkler may vary. If there is limescale on the spray head, you can remove the parts and put them in vinegar water to descale. 3.Some installation suggestions It is recommended to use a long aerator with pipe in places where the water outlet is high such as kitchen beams. It is recommended to use a short aerator when the water outlet of the sink is weaker. 4.Friendly reminder.When installing and tightening, be sure to put a rag or other product under the clamp. So that the main body of the bubbler will not be scratched and its appearance will not be affected. Due to the water pressure, the water will normally flow for about one second when you close the faucet. 5.Thank you for your trust and choice. Our products are covered by 30-day quality guarantee, while we offer free return and exchange. If you have any questions, please feel free to contact us, we will do our best to provide you with the best service.