Compatibility: The spin mop head replacement compatible with EasyWring 1-Tank system, thick and durable, dry and wet, can work easily.The spin mop replace head,Inner triangular rim size 4 inch and the outer triangular rim size 6 inch in dianeter, with the same size and design as the original.(Not fit 2-Tank system) Multi-Purpose: It is suitable for wooden floors, ceramic tiles, laminate floors, marble floors and other sealed hard floors, you can also use it to clean cars or windows.The dry wet use mop head replacement is multi-functional,and dry mop can be used to clean walls or other places covered with dust efficiently