Outer and inner dense, inner diameter spiral pattern, high pressure resistance. Food-grade materials, selected for the housing are safe and environmentally friendly, and will not cause secondary pollution and strong pressure resistance. Service life: 3-6 months (according to local water quality) Operating temperature: 5-45 Celsius Inlet pressure: 0.1-0.4 / MPA Applicable water source: tap water Product function: remove and filter large particles of impurities, sediment, rust, etc. Efficacy: filter the sediment, visible to the naked eye Water treatment machine category: household machine, business machine colour:white material:pp cotton size:Height 50.8cm, outer diameter 6cm, inner diameter 2.9cm Package Contents: 4*Water PurifierOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.