this product is widely applied to the sintered filter elements of industry for filtering rust,mud sand and other impurities in the water,having high porosity ratio ,high water output and good filtering effect. adopeted new -generation calcium chlorite filteringmaterial can completely remove residual chorine in the water. Dismanting ,Installing and Cleaning:open the bottom cover of water puifier, use a slender hand object (such as chopstick)to push out filter element. then clean it with toothbrush, scouring pad etc. or sock it in the boiled water. Specification: Material: PE film calcium sulfite Suitable Temperature: 0~100 degrees Bigger Head Diameter:2.2 CM Smaller Head Diameter:1.4CM Size: 8x6x6cm Weight:119g Package Contents: 1 X Household filters 1 X filter 1 X box Note: Light 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.