The syphon cloth filters are the original Hario replacements that fit into various Hario syphons. The filter can be used time and time again. There are five in this pack so you won’t need replacements for a long time. The syphon filters are compatible with most of the Hario syphons including the TCA 2, TCA 3, TCA 5, and MCA 5. All you have to do is make sure that you clean the syphon filter and wash the cloth filters thoroughly after use.