These are the filters for your SHURflo pumps. These filters twist onto the inlet side of your pump, and are a must to extend the life of your water pumps. The filters feature and easily removable clear bowl, which makes inspection and cleaning much easier. There are two different models available, one with a 1/2" barb fitting and the other with a 1/2" male N.P.T. fitting. Please specify when ordering.