<p>The recommended filter life for each filter is 3-6 months,In addition, remove the filter elements every two weeks and wipe it with sandpaper. Food grade ABS plastic for most faucets. 21.5mm faucet with external thread, 23.5mm faucet with internal thread and 14-22mm internal thread faucet with 3 different interfaces. This filter can remove impurities, heavy metals, chlorine, etc., reduce scale, soften water quality, improve taste and promote healthy lifestyle. By simply pushing between the faucet and the purified water, the filter life is extended (due to local water quality and frequency of use), saving time and water. colour:White Material:ceramics size:10cm Package Contents: 2*Water Filter Only the above package content, other products are not included. 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.</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-WuhanGQ shop 3