1.[PRE-FILTER] This water filter cartridge replacement includes a removable and replaceable pre-filter screen. The pleated design of the pre-filter increases the filtration area by 4 times and extends the life of the activated carbon cartridge layer 2.[COMPATIBLE MODEL] This water filter cartridge is compatible with Amway Espring water filter.The filter has the same function as the original filter and can directly replace your old filter 3.[DEEP-FILTERING] The filter element of this water purifier adopts three-stage deep filtration design to filter sewage while retaining beneficial minerals, providing a high-quality drinking life experience 4.[EASY REPLACEMENT] The package we sent includes a full set of filter elements, accessories and instructions, which is convenient for you to change quickly